FLUID LEVEL CHECK
It is recommended that the front or rear axle lubricant level be checked at each engine oil change. The filler plug may be located either on the front or the rear of the housing, depending on the axle used. Sometimes it is an allen head plug. When the unit is warm, the level should be even with the plug hole; when cold, it may be a bit below. A finger makes a fine dipstick. Lubricant may be added with a suction gun. Standard differentials may use SAE 80W GL-5 gear lubricant or the special lubricant made for limited slip differentials. Limited slip differentials must use the special lubricant or they will be damaged. If you don't want to go to the trouble of finding our, then the obvious solution is to use the special limited slip stuff.
DRAIN & REFILL
See Figures 1 through 6
- Park the vehicle on the level with the axles at normal operating temperature.
- Place a pan of at least 6 pints capacity under the differential housing.
- Remove the filler plug.
- If you have a drain plug, remove it. If not, unbolt and remove the differential cover.
- Install the drain plug, or differential cover. Use a new gasket if the differential cover has been removed.
- Install the drain plug and tighten it so it will not leak. Do not overtighten.
It is usually a good idea to replace the gasket at this time.
- Refill the differential with the proper lubricantdo not overfill!