1994 Chevrolet Corvette Owner's Manual - Page 182

Substitute Oil (LT1 Only): When adding oil to maintainengine oil level, if an oil meeting GM Standard GM4718Mis not available, you can useoil designated either SAE 5W-30 API ServiceSH or SG at all temperatures, orSAE 1OW-30 API Service SH or SG at temperatures above 0°F (-18°C). This oil should not be used for an oil change. Substitute Oil(LT5 Only): When adding oil to maintain engine oil level, if an oil meeting GM Standard GM4718M is not available, you can useoil designated SAE SG 1OW-30 API Service SH or at all temperatures. This oil should not used be for an oil change. Engine Oil Additives Don't add anythingto your oil. Your Chevrolet dealer is ready to advise if you think something should be added. When to Change Engine Oil See if any one of these is true you: for Most trips are less than 4 miles (6 km). It's below freezing outside and most trips are less than 10 miles (16 km). your skin for very long. Clean your skin and nails withsoap and water, or a good hand cleaner. Wash or throw away clothing or rags containing used engine If any one of these is true for your oil. (See the manufacturer's warnings vehicle, you need to change your oil and about the use anddisposal of oil filter every 3,000 miles(5 000 km) or products.) 3 months- whichever comes first. Used oil can be a real threat to the (See "Engine Oil Life Monitor" in the environment. If you change your own oil, Index.) be sure to drain all free-flowing oil from If none of themis true, change the oil the filter before disposal. Don't ever every 7,500 miles( 12 500 km) or 12 dispose of oil by putting it in the trash, months - whichever comes first. Change pouring it on the ground, into sewers, or the filter at the first oil change and at into streams or bodies of water. Instead, every other oil change after that. (See recycle it by taking it to a place that "Engine Oil Life Monitor" in the Index.) collects used oil. If you have a problem properly disposing of your used oil, ask Engine Coolant Heater (Engine Block your dealer, aservice station or a local Heater) recycling center for help. An engine coolant heater can be a big help if youhave to park outside in very cold weather, 0 "F (- 18"C) or colder. If your vehicle hasthis feature, see "Engine Coolant Heater" inthe Index. The engine is at low speed most of the time (asin stop-and-go traffic). Most trips are through dusty places. 1 L What to Do with Used Oil Did you know that used engine oil contains certainelements that may be unhealthy for your skin and could even cause cancer? Don'tlet used oil stay on 181 ...