1997 Chevrolet Corvette Owner's Manual - Page 257

Rear Axle When to Check Lubricant Refer to the Maintenance Schedule to determine how often tocheck the lubricant. See "Periodic Maintenance Inspections" in the Index. What toUse To add lubricant when the level is low, use Axle Lubricant (GM Part No. 12345977) or SAE 8OW-90 GL-5 gear lubricant. To completelyrefill after draining, add 4 ounces (118 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 Engine Coolant The cooling s stem in your vehicle is filledwith DEX-COOL engine coolant. This coolant is designed to remain in your vehicle for 5 years or 150,000 miles m (240 000 k )whichever occurs first, if you add only DEX-COOL6 extended life coolant. 8 The following explains your cooling system and how to add coolant when it islow. If you have a problem with engine overheating, see "Engine Overheating" in the Index. If the levelis below the bottom of the filler plug hole, you'll need to add some lubricant. Add enough lubricant to raise the level the bottom of the fillerplug hole. to 6-22