1996 Chevrolet Corvette Owner's Manual - Page 243

What Kind of Oil to Use Look for two things: RECOMMENDED SAE VlSCOSlTT GRADE ENGIWE OILS ~~~ ~ GM4718M The Corvette engine requires a special oil meeting GM Standard GM47 18M. 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 an oil that meets GM Standard GM47 18M. FOR BEST FUEL ECONOMY AND COW STARTING, SELECT M E LOWEST SAE VlSCOSlTT GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE. HOT WEATHER I LOOK FOR T I H S SYMBOL 7 "F 6100- "C - +3a - + 27 - + 16 - + 80. NOTICE: If you use oils that don't have GM4718M the Standard designation, you can cause engine damage not covered your warranty. by +60. +40. +20- +4 --7 - - 18 . 0- -1 PREFERRED SAE sw-30 1 WEATHER DONOT USESAE2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED cow I, 1 su 1 6-12