1995 Chevrolet Corvette Owner's Manual - Page 251

You should look for this on the oilcontainer, and use only those oils that are identified as meeting GM Standard 4718M and have the "Starburst" symbol on the front of the oil container. Your Corvette engine is filled at the factory with a Mobil 1 synthetic oil, which meets all requirements for your vehicle. @ When to Change Engine Oil See if any one of these is true for you: 0 Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly important when outside temperatures are below freezing. Most trips include extensive idling (such as frequent driving in stop and go traffic). Most trips are through dusty areas. Substitute Oil(LTl Only): When adding oil to maintain engine oil level, oil meeting GM Standard GM47 18M may not be available. You can add substitute oil designated SAE 5W-30 with the "Starburst" symbol or API Service SH at all temperatures. If temperatures are above 0"F (- 18 C), you may substitute SAE 1OW-30 with the "Starburst" symbol or API Service SH oil. This oilshould not be used for an oil change. O If any one of these is true for your vehicle, you need to change your oil and filter every 3,000 miles(5 000 km) or 3 months -- whichever comes first. (See "Engine Oil Life Monitor" in the Index.) If none of them is true, change the oil and filter every 7,500 miles (12 500 k ) 12 months -- whichever m or comes first. (See "Engine Oil Life Monitor" in the Index.) ~ Substitute Oil(LT5 Only): When adding oil to maintain engine oil level, if an oil meeting GM Standard GM47 18M is not available, you can use oil designated SAE 1OW-30 with the "Starburst" symbol or API Service SH at all temperatures. This oil should not be used for an oil change. Engine Coolant Heater An engine coolant heater can be a big help you have if 0" to park outside in very cold weather, F (- 1 8 O C) or colder. If your vehicle has this feature, see "Engine Coolant Heater" in the Index. Engine Oil Additives Don't add anything to your oil. Your Chevrolet dealer is ready to advise if you think something should be added. 6-16