1995 Chevrolet Camaro Owner's Manual - Page 259

How to Check The proper fluid should be added if the level is below the "STEP" mark on the reservoir. See the instructions on the reservoir cap. What to Use Standard Differential Use Axle Lubricant (GM Part No. 1052271) or SAE 8OW-90 GL-5 gear lubricant. Rear Axle When to Check and Change Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant and when tochange it. See "Periodic Maintenance Inspections" in the Index. Limited-Slip Differential To add lubricant when the level is low, use Axle Lubricant (GM Part No. 1052271) or SAE 8OW-90 GL-5 gear lubricant. To completely refill after draining, add 4 ounces (1 18 ml) of Limited-Slip Differential Lubricant Additive (GM Part No. 1052358).Then fill to the bottom of the filler plug hole with Axle Lubricant (GM Part No. 12345977) or SAE 8OW-90 GL-5 gear lubricant. 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 raise the level to the bottom of the filler plug hole. 6-27