These units use SAE 75-85W or 85W-90 GL-4/GL-5 gear oil.
See Figure 1
Check the lubricant level at the interval specified in the maintenance chart.
- With the car parked on a level surface, remove the filler plug from the side of the transmission case.
- If lubricant begins to trickle out the hole, there is enough. Otherwise, carefully insert a finger (watch out for sharp threads) and check to see if the oil is up to the edge of the hole.
- If not, add lubricant through the hole to raise the level to the edge of the filler hole. Most gear lubricants come in a plastic squeeze bottle with a nozzle, making additions easy, you can also use a squeeze bulb. Add gear oil GL-4/GL-5.
- Replace the plug and check for leaks.
DRAIN AND REFILL
It is relatively easy to change your own gear oil. The oil level should be checked twice a year and changed every 36,000 miles or three years, whichever comes first. The only equipment required is a drain pan, a socket to fit the filler and drain plugs, and an oil suction gun or gear oil in a squeeze bottle. Gear oil can be purchased in quarts or gallon cans at automotive supply stores.
To change the oil:
- Raise and safely support the front end on jackstands.
- Slide a drain pan under the drain plug.
- Remove the filler plug and then the drain plug.
- When the oil has been completely drained, install the drain plug.
- Using the squeeze bottle or suction gun, refill the gearbox to the level of the filler plug.
- Install and tighten the filler plug.