Repair Pontiac Mid-size 1974-1983 Repair Guide

Manual Transmission

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FLUID RECOMMENDATIONS



In all manual transmissions, use only standard GL-5 hypoid gear oil, SAE 80W or SAE 80W/90.

LEVEL CHECK





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Fig. Fig. 1 To check the A/T fluid level, pull the dipstick from the tube located at the rear of the engine ...



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Fig. Fig. 2 ... clean and reinsert the dipstick, then pull it out and check the level while holding it horizontal



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Fig. Fig. 3 If necessary, add the proper amount of automatic transmission fluid

  1. Raise and safely support the vehicle with jackstands, preferably in a level altitude. Remove the filler plug from the side of the transmission housing.
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  3. If the lubricant begins to trickle out of the hole, there is enough and you need not go any further. Otherwise, carefully insert your finger (watch out for sharp threads) and check to see if the oil is up to the edge of the hole.
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  5. If the oil is not up to the edge of the hole, add oil through the hole until the level is at the edge of the hole. Most gear lubricants come in a plastic squeeze bottle with a nozzle, making additions simple. You can also use a common kitchen baster to add fluid. Use only standard GL-5 hypoid gear oil, SAE 80W or SAE 80W/90.
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  7. Replace the filler plug, then carefully lower the vehicle.
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  9. Take the vehicle for a test drive, then check for leaks.
  10.  

DRAIN & REFILL



There is no recommended interval for the manual transmission, but it is always a good idea to change the fluid if you have purchased the car used or if it has been driven in water high enough to reach the axles.

  1. The oil must be hot before it is drained. Drive the car until the engine reaches normal operating temperature.
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  3. Raise and safely support the vehicle with jackstands. Remove the filler plug to provide a vent.
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  5. Place a large container underneath the transmission and then remove the drain plug.
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  7. Allow the oil to drain completely. Clean off the drain plug and replace it; tighten it until it is just snug.
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  9. Fill the transmission with the proper lubricant, as detailed earlier in this section. Refer to the Capacities chart for the correct amount of lubricant.
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  11. when the oil level is up to the edge of the filler hole, replace the filler plug and lower the vehicle. Drive the car for a few minutes, then stop and check for any leaks.
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