1995 Chevrolet Corvette Owner's Manual - Page 249

Just fill it enough to put the level somewhere in the proper operating range. Push the dipstick all the way back in when you're through. What Kind of Oil to Use Look for two things: 0 GM4718M The Corvette engine requires a special oil meeting GM Standard GM4718M. Oils meeting this Standard may be identified as synthetic. However, not all synthetic oils will meet this GM Standard. You should look for and use only anoil that meetsGM Standard GM47 18M. LT5 Engine NOTICE: If you use oils that don't have GM4718M the Standard designation, you can cause engine damage not covered your warranty. by 6-14