2003 Chevrolet Corvette Owner's Manual - Page 244

SAE 5W-30 As shown in the viscosity chart, SAE 5W-30 is best for your vehicle. However, you can use SAE 1O-W30 if it's going to be 0°F (-18°C) or above. HQT WEATHER L LOOK FOR T I HS SYMBOL These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 2OW-50. Oils meeting these requirements should also have the starburst symbol on the container. This symbol indicates that the oil has been certified by the American Petroleum Institute (API). 1 - 1 1 r IWJ COLD WEATHER SAE 5W.-30 RECOMMENDED SAE IOW-30 ACCEPTABLE IF 5W-30 I NOT S AVAILABLE V 8 - I vu 3 , l v u l u ,-hn.nlrl I n n L IVWI\ f e w IWI th;e n m thn n i l r.nntq;nnr L I llcl "I I L I I" VI, "VI # L u l l I", , rrnrl UI t u mlrn uvv only those oils that are identified as meeting GM Standard 4718M and have the starburst symbol on the front of the oil container. Your vehicle's engine is filled at the factory with a bd&il p c \ r n t h a t i r ' nil I n r h i p h mnntc 3 1 1 rnnt t i r a m a n t c your vehicle. O y l I L I I b L I W VII, V V I I I W I I DO NOT USE SAE 1OW-40, SA€ 20W-50 OR ANY OTHER V!SCOS!rv GRADE O!L NOT RECOMMENDED IllL,L,,cl UBI fnr ("I IL,yuII"II#uIIL" 5-15