Project Description

1950 Buick Owners Guide

1950 Buick Owners Guide

The 1950 Buick Owners Guide is compiled by the Buick Engineering and Service Departments to assist you as 1950 Buick Owners in obtaining the utmost pleasure and satisfaction from your 1950 Buick.

It is urged that 1950 Buick Owners closely follow the instructions and recommendations.


1950 Buick Keys

1950 Buick Keys

Identical keys operate all the locks on your Buick. Remove the “Knock-out” number and keep it in a safe place, to be used if your keys are lost or mislaid and duplicates are required. To lock the ignition, turn the key to “lock”; to shut off the ignition but still leave it operative with the key removed, turn the key to “off”. The car may then be operated yet the privacy of the glove and trunk compartments retained.

Lock the ignition and the doors of your car when leaving it unattended. Over 75% of the vehicles stolen have been left either with the key in the ignition lock or unlocked.


When the engine is cold, depress the accelerator pedal just far enough to engage the starter. If the engine is warm, hot, or partially flooded, and does not start readily, depress the accelerator pedal to the floor and hold it there until the engine fires regularly. Always, in starting, be sure the shift lever is in “neutral”. On Dynaflow Drive cars, starter will not operate unless control lever is in “N” or “P”.


It is advisable that you as 1950 Buick Owners limit driving speeds during the first 1000 miles of operation in order that the closely fitting parts will “wear in” smoothly. For the first 500 miles of driving, limit speeds to not more than 50 miles per hour and for the next 500 miles, speeds up to 70 miles per hour may be used for short distances after the engine has become warm. Warming the engine at low speeds allows all parts to expand more uniformly to operating clearances. Avoid high speed driving for long distances until the car has been driven at least 1000 miles.


In the selection of the proper brand of oil it is essential to consider the reputation of the refiner or marketer.

There are two types of oil available for use in automobile engines:

Regular Type – This term designates motor oil generally suitable for use in internal combustion engines under moderate operating conditions. (Not for use in engines equipped with hydraulic lifters)

Premium Type – This term designates motor oil having the oxidation stability and bearing corrosion preventive properties necessary to make it generally suitable for use in internal combustion engines where operating conditions are more severe than regular duty. THIS TYPE OIL SHOULD ALWAYS BE USED IN ENGINES EQUIPPED WITH HYDRAULIC LIFTERS.

Break-in oils or compounds are not recommended for Buick engines and should not be used. Some of these break-in oils contain additives which are not compatible with mot or oils that would later be used in the engine.


1950 Buick Oil Level

1950 Buick Oil Level

The gauge rod is marked “FULL” and “ADD OIL” and the space between the indicating arrows represents two quarts. I n this space the rod has three small holes to aid in showing the level of the oil, and these are spaced to indicate approximately 1 quart. Always allow car to stand with engine off for from two to five minutes before checking oil level.

The oil level should be maintained within the arrows. BUT DO NOT OVER-FILL. For proper S.A.E. grade of oil to use, see below.



1950 Buick Refueling

1950 Buick Refueling

As in your selection of motor oil, 1950 Buick Owners should consider the refinery or marketer in choosing the gasoline for their Buick. Most gasolines will perform satisfactorily but in some cases such as high temperatures or carbon accumulations, a premium gasoline will produce less detonation or “spark rap”. Normal detonation or “spark rap” is not harmful.

Series 40 Buicks equipped with Syncro-Mesh transmission may use REGULAR fuel, while compression ratios in Series 40 cars equipped with Dynaflow Drive and in Series 50 and 70 cars are sufficiently high to fully utilize PREMIUM fuels, and the most satisfactory performance will be obtained through their use.


1950 Buick Windshield Washers

1950 Buick Windshield Washers

Washer is operated by pressing the small button on the center of the windshield wiper knob and holding for a few seconds. Re­ lease button, start wiper arms by turning control knob to “ON”. Washer will operate for several seconds before shutting off automatically.

Keep the glass jar Riled with water. In freezing weather use Buick windshield washer solvent part No. 980807. Do not use water containing alcohol or other anti-freeze as it will damage car finish.


1950 Buick Lights

1950 Buick Lights

Headlights, parking lights, instrument lights, and map lights are con­ trolled from a single four-way switch marked “LIGHTS” located at the left of the radio grille. There are two “out ” positions in the switch obtained by pulling the circular knob. The first step turns on the parking lights and the second step controls the headlights. Instrument lights and map lights may be turned on in either step by simply turning the knob. In the extreme left position, both instrument and map lights are “off “. By turning the knob to the right one step, the map lights are “on”. The next step to the right illuminates the instrument panel. Continued turning to the right diminishes the intensity of the instrument panel lights. All lights may be turned “off” by simply pushing the control knob all the way in. It is not necessary to turn the knob in either direction before pushing in the knob. When pulled out again, instrument or map lights will be illuminated as previously.

The lower and upper beams of the headlights for city and country driving are controlled by a foot-operated switch located on the car floor adjacent to the position of the left foot. When the upper beam is in use, a small red light is illuminated on the speedometer just above the “50” mark.


1950 Buick Windshield Wipers

1950 Buick Windshield Wipers

Vacuum-operated wipers are used for cleaning a large vision area on wind­ shield glasses.

Adjustable speed control is had by turning a knob located on lower edge of instrument panel at left of steering column.


Control of the Dynaflow Drive is obtained by positioning the control lever mounted directly below the steering wheel. Dynaflow cars do not have a clutch pedal and lever may be placed in any position when engine is idling by merely moving the lever. Stops have been placed at certain points in the lever travel so that it is necessary to raise the lever to place it in certain positions. After a little experience driving the car, you will find that it is possible to select a range merely by “feel ” and visual reference to the dial will not be necessary.

When required, additional engine “braking” can be obtained by placing lever in “L”.

NOTE: The starting motor circuit on cars equipped with the Dynaflow Drive is so wired that the engine will not start unless the control lever is in either “P” or “N” positions.

There are five positions indicated:

1950 Buick Dynaflow in P

1950 Buick Dynaflow in P

“P” This is a Parking Lock and is to be used in conjunction with the foot operated “Step-on” parking brake. THIS PARKING LOCK MUST NEVER BE APPLIED WHEN CAR IS IN MOTION. Control lever must be raised to be placed in or out of this position. Parking the car with the control lever in “D”, “L”, or “R” positions will not partially brake the car as it does when you leave a conventional transmission “in gear.”

1950 Buick Dynaflow in N

1950 Buick Dynaflow in N

N” This is Neutral and is to be used when car is standing still and engine is running or when towing the car. Control lever must be raised when moving it from “D” to “N” position.

1950 Buick Dynaflow in D

1950 Buick Dynaflow in D

“D” This range is used for all normal forward driving. After engine has been started, place control lever in “D” position and depress accelerator pedal. Nothing more need be done.

1950 Buick Dynaflow in L

1950 Buick Dynaflow in L

“L” This range is to be used when the “going” is particularly tough, such as deep snow, or sand, or on long steep grades. To operate in this range, simply move the control lever to “L” position and drive as before. This range may also be used for “braking” the car speed on long or steep down grades.

Maximum acceleration from a standing start is obtained by starting in “L” and shifting to “D” at 35 M.P.H. (ECONOMY NOTE: When driving Dynaflow cars, 1950 Buick Owners have a choice of good performance with economy or superb performance. Good fuel economy may be obtained by making normal starts and not attempting to obtain maximum acceleration at all times. If, however, the 1950 Buick Owners desire maximum performance on every start, you must expect less fuel economy.)

The shift from “L” to “D” or vice versa may be made while the car is in forward motion by merely flipping the lever. These shifts should not be made at speeds over 40 M.P.H.

1950 Buick Dynaflow in R

1950 Buick Dynaflow in R

“R” This position reverses the car motion.

To operate with car standing, raise and move control lever to stop at bottom of lever travel. Depress accelerator pedal for backing car.

PUSHING CAR TO START ENGINE-If it becomes necessary to push the car to start engine, the control lever should be left in “N” until the car has reached an approximate speed of 15 M.P.H., then placed in “L” to crank engine. After engine starts, return lever to “N” for warm up. It is safer to push car than to tow it.



1950 Buick Jack

1950 Buick Jack


(1) Set parking brake and remove hub cap with sharp end of jack handle. (2) Slightly loosen all wheel bolts. (3) Place jack under front bumper in line with inside edge of front tire to be changed and raise jack until tire clears ground.

1950 Buick Tire Changing

1950 Buick Tire Changing


(1) Set parking brake, remove hub cap, and loosen wheel bolts. (2) Place jack under bumper face plate and raise until tire clears ground.

In replacing either front or rear wheels , tighten wheel bolts snugly, lower jack until wheel touches ground, then MAKE CERTAIN THAT ALL BOLTS ARE DRAWN UP TIGHT. Bolts must be tightened across wheel to prevent wheel run-out.


1950 Buick Adjustable Front Seat

1950 Buick Adjustable Front Seat

The front seat on all Buick models is easily adjusted to any position forward or backward to provide maximum driving comfort.

On all models, except convertible and Roadmaster Riviera styles, the seat may be adjusted by merely pressing the control lever at the drivers end of the seat and exerting slight body pressure either for­ ward or backward. When in the desired position, the seat adjuster mechanism will automatically lock to prevent movement.

All convertible styles and the Roadmaster Riviera model are equipped with Hydro-Lectric seat adjusters. Forward or backward movement of these seats is obtained by pressing the seat control button on the drivers end of the seat in the direction of desired travel. The seat is automatically locked when the control button is released.


1950 Buick Parking Brake

1950 Buick Parking Brake

This is a mechanically operated brake which locks both rear wheels. This brake is operated with the foot and is located on the left side under the instrument panel.

The brakes are self-locking and will remain applied unless the knob marked “Brake”, located at lower left flange of instrument panel, is pulled out to release them. The brakes should always be released before the car is driven.


Should 1950 Buick Owners contemplate hauling a house trailer with their Buick, it is advisable that you follow our recommendations covering weight limits, springs, tires, and hitch specifications. To obtain this information, write Buick Motor Division, Service Department, Flint, Mich.



1 Set the thermostat control-marked “Warmer” for the heat you want. Turn clockwise for higher temperature, counterclockwise for lower, or “OFF.” Temperature you set is kept even and constant-automatically-by controlling both the outside air heater and underseat heater.

2 Pull the knob-marked “Defroster”-to send warmed outside air through upper level of car.

1950 Buick Outside Air Heating

1950 Buick Outside Air Heating

3 Turn “Defroster” knob to right for forced draft of warmed outside air through car’s upper level at slow car speeds, or when stopped.

NOTE: To keep out offensive traffic odors and exhaust gases when traveling in congested traffic or when parked behind a car having its motor running, close both “Ventilation” knobs and “Defroster” knob and turn off defroster blower. Exhaust gases contain carbon monoxide. See note inside back cover.


1950 Buick Heater and Defroster

1950 Buick Heater and Defroster

4 Pull the switch-marked “Heater”-for floor-level heating of car. Now you have two-level heating, with uniform warmth in all areas of the car’s interior.

Be sure to keep a Ventipane open slightly-to let out old air.


5 Push in “Defroster” knob and make sure thermostat is at “off” (full counterclock­wise) position. Then pull either or both of the knobs-each marked “Ventilation.” “Ventilation” knob on left directs large volume of outside air to driver side “Ventilation” knob on right directs outside air to passenger side.

For additional driver and passenger comfort in the warmest of weather, while the car is motionless or while driving at slow speeds, simply turn “Defroster” knob to the right to start blower. This force-Rows a constant stream of outside air through­ out the car. See note above.

6 For complete circulation, keep Ventipanes open slightly to insure constant flow of air through the car, even when it’s raining and windows are normally closed.


1950 Buick Defrosting

1950 Buick Defrosting

7 For windshield and all-window defrosting only, push in both “Ventilation” knobs, pull out “Defroster” knob, and set the thermostat control (“Warmer” knob) for the temperature you want.

8 With outside air heating in use as described above under “Heating,” defrosting of all windows, of course, is automatic. For maximum defrosting turn “Warmer” knob to full clockwise position and turn “Defroster” knob to right to turn on blower.

9 For defogging windows in summer months or during conditions of high humidity when no heat is desired, just pull out the “Defroster” knob and turn to right. This insures clear vision through all windows.



1950 Buick Clock

1950 Buick Clock

To reset clock, pull knob “A” at bottom of clock out and turn in desired direction.

To regulate the clock for more accurate timekeeping, place small screwdriver or similar tool in slot in small knob “B” behind the reset knob and turn toward “F” if clock is running slow, or toward ‘S’ if clock is running fast. It is advisable to move the regulator only one division or graduation at a time. By following this procedure your clock may be regulated to keep exceptionally close time.

FAILURE OF CLOCK TO RUN-IMPORTANT – The Electric Clock requires special attention when reconnecting a battery that has been disconnected for any reason, a clock that has been disconnected, or when replacing a blown fuse. IT IS VERY IMPORTANT THAT THE INITIAL WIND BE FULLY MADE.

To be certain of this proceed as follows:

(1) Make sure that all other instruments are off.

(2) Connect one terminal of the battery first.

Before permanently connecting the other cable, touch the terminal to its post on the battery. Immediately afterward strike the terminal again to see if there is a spark. If there is, allow the clock to run down until it stops ticking and repeat as above until there is no spark. Then immediately make the permanent connection before the clock can again run down. The clock will run down in approximately 2 minutes.

The above procedure should also be followed when reconnecting the clock after connections have been removed, or when replacing a blown fuse. Be sure to disconnect the battery cable before installing new fuse.

Failure of clock to run may be caused by any of the following:

Blown fuse-discharged battery -corroded battery terminals -wire improperly connected to Iight switch, fuse block or terminal connection to back of clock -or defective clock.

In replacing fuse use only 3 ampere AGA fuse. Fuse is located on fuse block which is mounted on lower flange of instrument panel, just to the left of the steering column.



Switch and Volume Control (Left Knob) – The first portion of rotation in a clockwise direction turns on the radio. Further rotation increases volume.

Tone Control (Chrome Plated Lever Behind the Volume Control Knob) – Control in extreme “treble” position gives brilliant reproduction of the full tone range. This position will reproduce speech very clearly and distinctly. Rotation counterclockwise (toward “bass”) diminishes brilliance and accentuates low notes.

Tuning Control (Right Knob) – When tuning manually, or when setting up a station on one of the buttons, remember-If the program sounds shrill or distorted, it is probably caused by improper tuning and can be corrected by adjusting the tuning knob slightly. Since the low notes are more affected by tuning than the high tones, it is a good plan to tune the set to a point where the low notes are heard best and the high notes are clear but not shrill.

PUSH BUTION SET-UP – Setting the push buttons to tune to any desired station is a simple procedure requiring no tools or equipment.

1950 Buick Sonomatic Radio

1950 Buick Sonomatic Radio

Procedure is as follows:

  1. Turn on radio.
  2. Press button to left and at the same time pull it out as far as possible.
  3. With button out, tune in the desired station manually. Do this very carefully as the push buttons will automatically repeat the tuning each time they are pushed. If incorrectly tuned when set – up they will always be incorrect until setting is changed manually.
  4. Push button in as far as possible. This automatically completes the button set-up and locks the mechanism in position.


1950 Buick Selectronic Radio

1950 Buick Selectronic Radio

Buick’s Selectronic Radio is an innovation in radio tuning and provides a simple method of station selectivity regardless of locality. Unlike the Sonomatic Buick Radio which automatically tunes known stations in a particular locality, the Selectronic set automatically and quickly tunes in stations all along the dial which fall within the signal strength set by the operator.

Signal strength selectivity may be set at any one of six positions by turning the sensitivity knob located behind the manual tuning knob to either “MORE” or “LESS”. Extreme movement of the knob toward “MORE ” will include all available stations. By turning the knob to the extreme “LESS” position, nearly all stations are eliminated except strong local stations.

After setting the sensitivity control knob at any one of the six positions, turn on the set and move the dial indicator by either pressing the foot switch or the selector bar on the front of the set. Touch either momentarily and the dial indicator will automatically move to the next station on the dial having sufficient signal strength to fall within the range for which the sensitivity control is set. By repeating this operation intermittently, the dial indicator will “search ” the entire width of the dial and automatically return to the low frequency end of the dial ready to “search” the entire dial again.

Volume is controlled by the knob at the left end of the dial. By simply turning the knob clockwise, volume may be increased. Varying degrees of tone between treble and bass are obtained by turning the plate behind the volume control knob as indicated.

In some cases, when it is desirable to tune the set manually, simply operate the manual tuning knob at the right of the dial as with any conventional radio.

ANTENNA (Both Radios) – This is swiveled and can be swung “up” or “down” by means of a knob located inside of car just above windshield at center.

For satisfactory operation of the Selectronic Radio the antenna should be in “up” position and fully extended.


1950 Buick Hood Operation

1950 Buick Hood Operation

The Buick hood opens from either side. Latches are controlled from inside the car by handles mounted under instrument panel.

To open hood, pull latch handle firmly on side desired and release. It may then be raised manually from outside the car.

When closing hood, lower until both pilot pins are engaged and then press firmly at a point midway between pins to lock it.

Hood may be removed from car by unlatching both sides and lifting vertically until the pilot pins have cleared the hinges.


To operate the turn signal, the ignition switch must be first turned on. The switch lever on the steering column should then be pushed up for a left turn and down for a right turn. This action causes the front lamp, located within the bumper guard and the upper lens of the lamp mounted at the extremity of the rear fender, to Rash on that side of the car in which direction the turn is to be made.

Verification of the proper functioning of both front and rear lamps is indicated by flashing one of the illuminated green arrows, located in the gages to the right and left of the speedometer. If the arrow does not light and Rash after movement of the turn signal lever, it indicates that the signal system is not functioning properly and should be checked for burned out bulbs, in either front or rear signal lamps, or the bulb which illuminates the green arrow.

Always INDICATE a turn at a reasonable distance before making the turn.


1950 Buick Rear Compartment Handle

1950 Buick Rear Compartment Handle

Access to Buick’s rear trunk compartment is obtained by turning the familiar Buick emblem on the rear compartment lid. This emblem serves as a dust shield for the rear compartment lock which is concealed beneath. Turn the key and raise the compartment lid using lower edge of ornament as a handle. To lock, firmly close lid.


To get maximum service from tires-“keep them properly inflated” – use an accurate gauge.


Use Air Pressure as Indicated Below for Checking Proper Inflation.

1950 Buick Tire Over Inflation

1950 Buick Tire Over Inflation

1950 Buick Tire Under Inflation

1950 Buick Tire Under Inflation

1950 Buick Tire Proper Inflation

1950 Buick Tire Proper Inflation

24 Lbs. (Starting Pressure) AFTER the car has been standing for three hours or driven less than a mile.

In temperatures below freezing, inflate 2 lbs. higher.

26 Lbs. (City Pressure) AFTER driving the car three miles or more BELOW 40 miles per hour.

28 Lbs. (Highway Pressure) AFTER driving the car three miles or more ABOVE 40 miles per hour.

It is normal for air pressure to build up in a tire due to driving conditions.



1950 Buick Tire Wears

1950 Buick Tire Wears



This change of position helps out uneven wear on front tires and distributes the foster wear on the rear tires over all five tires.



Use soap, warm water, and stiff brush to remove road grime and curb dirt from white sidewall tires. Use medium or fine steel wool for severe cases.

Do not use gasoline, kerosene, or any oil product that will discolor the sidewalls and rot the rubber.

By comparing air pressure in all tires, any variation in pressures will be evident. To prevent flat tires, investigate and correct a continued loss of air in any tire.


The power operating switch for raising or lowering top is located on lower Flange of instrument panel at right of steering column.


1950 Buick Convertible Top Knob

1950 Buick Convertible Top Knob

  1. Stop car.
  2. Release catch above windshield.

CAUTION: Before operating power top control button make certain that the top directly above the windshield is raised slightly in order to clear windshield dowels. Close catch.

  1. With ignition switch on, pull control knob away from panel and hold until top is completely lowered.
  2. After top is lowered, raise it slightly by hand and pull the top material and padding out from under the roof bow so that it lays in position shown.
    1950 Buick Convertible Top Cover

    1950 Buick Convertible Top Cover

  3. Fold corners of top material as shown in Fig. 3, roll top material up and tuck down into top compartment, fasten hold down strap.
    1950 Buick Raise Convertible Top

    1950 Buick Raise Convertible Top

  4. Tuck in surplus top material at sides and install top boot.


  1. Stop car.
  2. Remove top boot and unfasten hold down strap.
  3. Push top control knob forward and hold until top is fully raised.
  4. Draw top down over wind- shield header dowels and fasten catch to lock top.

To keep mechanism in good condition the top should be operated at least once a month. CAUTION: DO NOT OPERATE EITHER UP OR DOWN WHILE CAR IS IN MOTION.

If top is to be left folded for any length of time it should be securely strapped down to prevent chafing of top material. Also, boot should be installed to keep top clean and dry.

Wiring for Power Operated Top, Side Windows and Front Seat is protected by a 30 ampere Circuit Breaker having automatic reset .


1950 Buick Power Windows

1950 Buick Power Windows

Each panel is equipped with an operating button which is pushed down to lower the window, and pushed up to raise the window.

Power for windows and seat is obtained from the same unit used to operate the power top.

CARE OF CONVERTIBLE MODEL TOPS – The ONLY METHOD RECOMMENDED for cleaning convertible top material is the use of lukewarm (not hot) water, and a mild (not caustic) soap. The top should be cleaned carefully from end to end using a medium stiff brush or sponge. Do not saturate at any point. Do not fold top when wet. Frequent brushing with an ordinary upholstery brush or stiff whisk broom is helpful in preventing dust and dirt from imbedding itself in the fabric.



Sand and varnish all wood parts once a year. Dulux No. RK-147 is recommended. Sand, fill, and varnish (3 coats) all wood joints as needed. Wax wood parts every 90 days. Before refinishing, remove dirt and wax with clear gasoline.


Adjust front seat forward and open each rear door before folding rear seat cushion and back. This will prevent scuffing the seat back.


There are two numbers which identify your car. They are recorded by the license bureau of the state in which your car is licensed. See accompanying illustrations showing locations of these numbers.

ENGINE NUMBER – This is stamped on a raised boss at right side of crankcase just below the push rod cover.

1950 Buick Engine Serial Number Location - Series 40-50

1950 Buick Engine Serial Number Location – Series 40-50

1950 Buick Engine Serial Number Location - Series 70

1950 Buick Engine Serial Number Location – Series 70

SERIAL NUMBER – Plate is affixed to left front windshield pillar post and is visible by opening the left front door.

1950 Buick Serial Number Location

1950 Buick Serial Number Location


1950 Buick Battery

1950 Buick Battery

CAUTION – Electric Storage Batteries give off highly inflammable hydrogen gas when charging and continue to do so for some time after receiving a steady charge.

Under no condition should an electric spark or an open flame be allowed near the battery, particularly in the vicinity of the vent caps.

Before doing any work around a battery a metallic contact between the car bumper and the ground should be made to remove the possibility of a static charge causing a spark in the vicinity of the battery. A long metal bar or a metal chain of sufficient length will accomplish this.


1950 Buick Radiator

1950 Buick Radiator

The Buick Cooling System is a sealed pressure type which raises the coolant boiling point. There is no need to check coolant level as long as the operating temperature remains normal. Never check level until the engine has been stopped for several minutes. When checking level, always remove cap slowly to be sure the engine has cooled enough to remove the pressure even at normal temperatures.

The system should be drained and refilled twice a year. It is desirable to add a rust preventive when refilling. Proper coolant level is stamped on the engine side of the radiator as shown-DO NOT FILL ABOVE THIS LINE.

CAUTION – When installing anti-freeze, do not use solutions that contain salt, oils, kerosene, sugar, glucose or honey.


(Synchro-Mesh Transmission)

There should be 3/4 of an inch to 1 inch “lash” or free movement in the clutch pedal at all times.

Unless some “lash” is maintained the clutch may slip, necessitating replacement of clutch parts due to excessive heat and wear.


The parts of the car that have been chrome plated can best be pre­ served by frequent washing and waxing. The chlorides now being used by most city and state highway departments for melting ice and snow in winter and laying dust in summer are very harmful to chrome plated parts.


  1. Remove ash tray adjacent to map light having burned out bulb.
  2. When ash tray is removed, a small tab on the end of the bulb holder will be visible.
  3. Insert a flat key, small screwdriver or similar instrument behind this tab and pull toward center of ash tray opening until bulb holder snaps into full “out” position.
    1950 Buick Map Lamp

    1950 Buick Map Lamp

  4. The bulb will now be clearly seen and may be removed with the fingers.
    1950 Buick Map Lamp Bulb Replacement

    1950 Buick Map Lamp Bulb Replacement

  5. After replacement of bulb, press in on bulb holder slightly and push back into position. Replace ash tray.


1950 Buick Speedometer Trip Mileage

1950 Buick Speedometer Trip Mileage

The Buick speedometer is equipped with a reset knob so that the lower mileage dial can be set to zero at the start of a trip. To reset to zero, merely push up on knob and turn in clockwise position until all digits read zero. To adjust forward, push in knob and turn in counterclockwise position. This sets reading forward by tenths of a mile.


1950 Buick Lamp Bulbs Overview

1950 Buick Lamp Bulbs Overview



The rear door locks on four door sedans are designed so that they can be set to permit the inside door handle to “free-wheel” when the locking button is pushed down into lock position. This prevents children from accidentally opening the rear doors. The feature can be changed by any Buick Dealer if it is not desired.

When lock is set for free-wheeling it is necessary to raise the lock button before either the inside or outside handles will open the door.


1950 Buick Fuses

1950 Buick Fuses


1950 Buick Specifications and Data

1950 Buick Specifications and Data


All 1950 Buick Owners should be aware of the following maintenance rules:

Engine – The oil level should be maintained at all times within 1 quart of the “Full” arrow, or not lower than the middle hole in gauge rod. The lower or “Add Oil” arrow on gauge rod is a DANGER MARK and NOT A WORKING LEVEL.

The crankcase should be completely drained and refilled with new Premium Type oil of the proper viscosity at the end of the first 1000 miles and every 2000 to 3000 miles thereafter. Adverse driving conditions may require more frequent draining and refilling. The oil filter element should be changed at the end of the first 1000 miles. Use grades shown below for maintaining proper level and refilling:

TEMPERATURE – SAE GRADE (Temperatures are for anticipated cold starting conditions)

Not lower than 32°F – 20-W

As low as plus 10°F – 10-W

As low as minus 10°F – 10W

Below minus 10°F – 5-W if available, or 10-W plus 10% Kerosene


Chassis – Wipe dirt from lubrication fittings, then apply a good grade of water-resistant chassis lubricant, under pressure, at the following points: (1) Lower Control Arms, inner and outer ends, (2) Upper Control Arms, (3) Steering Knuckles, (4) Tie Rods, inner and outer ends, (5) Transmission Shift Idler Lever Pin, (6) Clutch Release Equalizer, (7) Clutch and Brake Pedals.

Synchromesh Transmission and Rear Axle -Check level at filler plug. Maintain level using SAE 90 Multi-Purpose Gear Lubricant (U. S. Army Spec. 2-1058). Seasonal or periodic draining and flushing is not required. When complete refilling is required, however, use above lubricant in transmission but use only Factory Hypoid Lubricant in rear axle.

Dynaflow Drive -Apply Lubriplate or Chassis Lubricant to notches of control detent at base of steering column . Check Transmission oil level, with transmission oil warm , transmission in Parking and engine idling . If level is more than one inch below “FULL” mark on gauge rod, add oil but do not Fill above the “FULL” mark. Distance between “FULL” and “ADD OIL ” marks on rod represents one pint. Use oil specified under “Every 15,000 Miles.”

Cranking Motor (Starter) – Apply a few drops of engine oil to the link pins and fulcrum stud of shift yoke. WARNING: DO NOT OIL SOLENOID PLUNGER.

Distributor – Lubricate shaft with chassis lubricant through fitting on housing; the proper amount of lubricant is indicated by lubricant emerging from relief hole in front of distributor housing in a continuous unbroken stream.

Battery -Add distilled water to bring level to ledge at bottom of slot in well. WARNING: DO NOT FILL ABOVE LEDGE.

Air Cleaner – Normally serviced every 5000 miles. If car is operating in dusty territory, however, check condition of air cleaner and clean it if dirty. See cleaning and filling instructions under “Every 5000 Miles.”

Radiator – Check coolant level when engine is cold and add water to line marked “Filling Level -Cold” stamped approximately 1 1/4″ below t op of head tank. CAUTION: RADIATOR CAP SHOULD NOT BE REMOVED WHEN ENGINE IS HOT BECAUSE RELIEVI NG THE PRESSURE MAY CAUSE THE COOLING SYSTEM TO BOIL, WITH RESULTANT LOSS OF WATER OR ANTI- FREEZE SOLUTI ON. FILL­ I NG RADIATOR WHEN HOT, OR FILLING ABOVE LEVEL LINE MAY RESULT IN LOSS OF COOLANT OR ANTI-FREEZE SOLU­ TION THROUGH OVERFLOW PIPE. When refilling cooling system after draining, “WARMER” knob under dash must be in full “clock­ wise” position. See page 10.

Generator – Place a few drops of engine oil in cups at both ends of generator. Avoid excessive oiling which may affect brushes and windings.

Manifold Valve Shaft – Place a few drops of graphited kerosene on shaft at each end and rotate shaft to work lubricant into bearings. If shaft is frozen, free up by tapping ends of shaft lightly with hammer.

Throttle Control Linkage – Place a few drops of engine oil at connections. If the accelerator equalizer shaft squeaks at the upper and lower brackets, work Lubriplate into bearings and wipe off surplus lubricant.

Master Brake Cylinder – Thoroughly clean filler cap nut before removal to avoid getting dirt into reservoir. Add fluid as required to bring level 1/2″ to 1″ below top of filler opening. Use G.M. or Delco Super No. 11 Hydraulic Brake Fluid. NEVER USE RECLAIMED FLUID OR ANY MINERAL OIL.

Tires – Inflate all tires to pressures given above.

WARNING: It is not possible to inflate tires correctly when they are hot.

Hood Fastener Mechanism – Use engine oil on fastener linkage on hood. lightly coat hinge pilot pins and fastener hooks with Lubriplate.

Door Locks and Strikers – Heavy bodied lubricants usually used on door locks tend to hinder the free movement of lift bolt type locks. Use only SAE 10 engine oil at following points (1) Between roller and bolt (2) Edges of bolt slot in door (3) Bottom surfaces of upper and lower guide channels in striker (4) Lower surface of wedge plate bumper. Apply light film and wipe off surplus oil.

Door Checks and Hinges – Apply one drop of light engine oil to front door check link hinge pin. Sparingly coat lug on rear door check link with Lubriplate. No lubricant required on hinge pins.

Dome Lamp Door Switches – Apply G. M. Door-Ease Lubricant to end of switch plunger and point of contact on door hinge pillar.

Glove Box Door – Apply a few drops of light engine oil to glove box door hinges -wipe off surplus oil. Sparingly coat lock striker with G. M. Door-Ease Lubricant.

Windshield Wiper Cables – Wipe a few drops of light engine oil on cables where they pass over tensioner pulleys. CAUTION: WIND­ SHIELD WIPER BLADES MUST NOT BE ROTATED BY HAND FOR ANY REASON AS THIS PLACES AN UNDUE STRAIN ON CABLE FASTENINGS.

Rear Compartment Lid Lock – Lightly coat lock _latch and lock striker with Lubriplate.

Gas Tank Filler Door – Apply a few drops of light engine or penetrating oil on the hinge pins. Wipe off excess to prevent accumulation of fine dust and dirt.

Lock Cylinders – If key operates roughly in lock cylinder, blow powdered graphite into key slot. DO NOT USE OIL.


Lights – Check all lights and aiming of headlamps.


Distributor – Remove distributor cap and rotor. Apply a few drops of light engine oil to felt wick in top of cam. Put 1 drop of oil on breaker arm pivot. Work a small amount of petroleum jelly into a cloth, then hold cloth on distributor cam while engine is being cranked. CAU­ TION: AN EXCESSIVE AMOUNT OF JELLY WILL THROW OFF WHEN HOT AND INSULATE THE CONTACT POINTS, CAUSING IGNITION FAILURE.

Air Cleaner – Every 5000 miles (more often under dusty operating conditions) disassemble air cleaner and wash cleaner element and oil sump with a non-inflammable solvent (kerosene is not recommended). Wipe sump dry and allow cleaner element to drain until dry. DO NOT USE AIR BLAST ON CLEANER ELEMENT. Fill sump to indicated level with one pint SAE 50 engine oil and assemble air cleaner. DO NOT OIL THE CLEANER ELEMENT BECAUSE OIL WILL DRAIN BACK INTO THE SUMP AND CAUSE SUMP TO BE OVERFULL.

Oil Filter – Change oil Filter element at First 5000 miles and each 5000 miles thereafter. Remove old element, remove drain plug, and wipe container out thoroughly with CLEAN cloths. Install drain plug, new element, and new cover gasket. Use only Buick Oil Filter Replacement Element Part No. 5572129 (AC P127) or equivalent.

Hydro-Lectric Power Unit Motor – Swing the oil cover aside on upper end of motor and lubricate upper bearing with a few drops of engine oil.

Pump Operating Countershaft – Carter Carburetor Only -Remove the two dust cover attaching screws and apply several drops of engine oil in screw holes above countershaft. Install screws.

Steering Gear – Check level at filler plug. Maintain level using all­ season steering gear lubricant or Multi-Purpose Gear Lubricant as recommended for rear axle. Do not use pressure when filling as this will force oil up the steering column. The steering gear is filled at the factory with a special all-season gear lubricant and seasonal or periodic change of this lubricant is unnecessary.

Lights – Check all lights and aiming of headlamps.


Front Wheel Bearings – Wipe old grease out of hub and wash bearings. Work approximately one tablespoon of wheel bearing lubricant into each bal l bearing. The oil seal packings should be examined for wear or leaking and replaced if necessary.

Bearing Adjustment – Take up spindle nut with 10″ wrench until bearings are preloaded at least 1 hex, then rotate wheel 1 revolution to make sure bearings are seated. Back off spindle nut until bearings are loose. Tighten nut until all bearing looseness is just removed, then line up nut to nearest cotter hole and install cotter pin. Do not mistake loose king pin bushing, etc., for wheel bearing looseness.


Shock Absorbers – Inspect and fill to proper level using only Delco Shock Absorber fluid. For filling instructions 1950 Buick Owners can consult their Authorized Buick Dealer.


Dynaflow Transmission – At 15,000 mile intervals the oil pan and torque converter should be completely drained and re-filled with fresh oil. Transmission MUST NOT BE FLUSHED when oil is changed. Use Special Buick Oil for Dynaflow Drive or any Automatic Transmission Fluid, Type A, which has an AO-ATF identification number embossed in lid of container.

Put in 3 quarts of specified oil. With engine idling in Parking, complete the refilling to bring oil level t o 1 3/4″ below “FULL” mark on gauge rod. When transmission is warmed up, the oil level should then be at “FULL ” mark on gauge rod.


Hydro-Lectric System – Each Fall all windows should be lowered, the seat moved back and the reservoir on the power unit removed, cleaned out with Declene or alcohol and then refilled with G.M. or Delco Super No. 11 Brake Fluid. Brake fluid heavier than No. 11 should not be used in extremely cold climates as it will cause sluggish operation of the Hydro-Lectric system.

CAUTION: Before installing reservoir, make certain that reservoir gasket is in good condition and properly installed. When reservoir is installed make certain that it makes full contact with gasket all around. Any leakage of dirt or water into reservoir will cause serious damage in Hydro-Lectric system.

Each Spring the folding top power cylinder piston rods should be lubricated with a few drops of castor oil or brake fluid. DO NOT USE MINERAL OIL.


Rear Wheel Bearings – Rear wheel bearings need not be lubricated more often than 20,000 miles. Whenever rear brakes are relined, or axle shafts are removed for other work it is advisable to inspect rear wheel bearings and oil seals. Replace seals if leaking or worn. Fill rear wheel bearings and space between oil seals with wheel bearing lubricant. Coat leather edges of seals with lubricant before installation of axle shaft.

Speedometer Cable – The speedometer cable is factory lubricated with special grease and normally requires no further service unless it becomes noisy. In extremely hot climates, or where considerable dust and water is encountered it may be necessary to lubricate the cable at intervals of approximately 20,000 miles or every t w o years. It is advisable to have this service performed by an Authorized Buick Dealer to insure use of the special grease in proper quantity.

Sunshade – If sunshade rod turns hard in support, remove retainer screw, pull rod from support and apply G. M. Door-Ease Lubricant. Do not use oil which may soil trim. Install rod in support and adjust retainer screw to proper tension.


1950 Buick Maintenance Chart

1950 Buick Maintenance Chart

License Weight: Consult the Dealer who sold you or the original 1950 Buick Owners the car, or the Motor Vehicle Commissioner of your State. Weights of all Buick body styles are regularly supplied to these authorities.