1997 Oldsmobile Bravada Owner's Manual - Page 239

How to Check Lubricant Rear Axle When to Check and Change Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant and when to change it. See "Scheduled Maintenance Services'' inthe Index. How to Check Lubricant If the level is below the bottom of the filler plug hole, you'll need to add some lubricant. Add enough lubricant to raisethe level to the bottom of the filler plughole. What to Use Refer to the Maintenance Schedule to determine what kind of lubricant touse. See "Recommended Fluids and Lubricants" in the Index. If the level is below the bottom of the filler plug hole, you'll need to add some lubricant. Add enough lubricant to raise the level tothe bottom of the filler plug hole. 6-19