1998 Chevrolet Corvette Owner's Manual - Page 335

Part D: Recommended Fluids and Lubricants NOTE: Fluids and lubricants identified below by name, part number or specification may be obtained from your dealer. USAGE ~~ FLUIDLUBRICANT 50/50 mixture of clean water (preferably distilled) and use only GM Goodwrench@ DEX-COOL@ or Havoline@ DEX-COOL@ Coolant. See "Engine Coolant" in the Index. Delco Supreme11 Brake Fluid or (GM Part No. 12377967 equivalent DOT-3 Brake Fluid). @ Engine Coolant USAGE Engine Oil FLUIDLUBRICANT The engine requires a special Engine Oil meeting GM Standard GM4718M. Oils meeting this Standard may be identified as synthetic, and should also be identified with the American Petroleum Institute Certified For Gasoline Engines "Starburst" symbol. However, not all Synthetic API oils with the Starburst symbol will meet this GM Standard. You should look for and use only an oil that meets GM Standard GM47 18M. For the proper viscosity, see "Engine Oil" in the Index. Hydraulic Brake System Hydraulic Clutch Hydraulic Clutch Fluid (GM Part No. 12345347 orequivalent System DOT-3 Brake Fluid). ~ Power Steering System Manual Transmission Automatic Transmission GM Synthetic Power Steering Fluid (GM Part No. 12345866 or 12345867 or equivalent). DEXRON@-I11 Automatic Transmission Fluid. -1 DEXRON@1 1 Automatic Transmission Fluid.