1998 Chevrolet Corvette Owner's Manual - Page 267

How to Check Lubricant the bottom of the filler plug hole with Axle Lubricant (GM Part No. 12345977) or SAE 8OW-90 GL-5 gear lubricant. Engine Coolant The cooling s stem in your vehicle is filled with DEX-COOL engine coolant. This coolant is designed to remain in your vehicle for 5 years or 150,000miles (240 000 k )whichever occurs first, if you add only m DEX-COOL' extended life coolant. 8 The following explains your cooling system and how to add coolant when it is low. If you have a problem with engine overheating, see "Engine Overheating" 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 raisethe level to the bottom of the filler plug hole. A 50/50 mixture of water and DEX-COOL@ coolant will: 0 Give freezing protection down to -34°F (-37°C). Give boiling protection up to 265 "F (129"C). Protect against rust and corrosion. Help keep the proper engine temperature. Let the warning lights and gauges work as they should. 0 What to Use To add lubricant when the level is low, use Axle Lubricant (GM Part No. 12345977) or SAE 8OW-90 GL-5 gear lubricant. To completely refill after draining, ml) add 4 ounces (1 18 of Limited-Slip Differential Lubricant Additive (GM Part No. 1052358). Then fill to 0 6-22