1993 Pontiac Firebird Owner's Manual - Page 228

If any one of these is true your for When to Change Engine Oil: You should look for this on the oil vehicle, then you need to change your oil container, and useonly those oils that See if any oneof these is true for you: and filter every 3,000miles (5 000 km) display the logo. 0 Most trips are less than 4 miles or 3 months -whichever comes fist. GM Goodwrench@ oil (in Canada, GM (6 km). If none of them is true, change the oil Engine Oil) meets all the requirements for 0 It's below freezing outside and most every 7,500 miles (12 500 km) or 12 your vehicle. trips are less than 10 miles (16 km). months -whichever comes first. Change The engine is at low speed most of the the filter at the first oil change at and Engine Oil Additives: time (as in door-to-door delivery, or in every other oil change after that. Don't add anything to your oil. Your stop-and-go traffic). Pontiac dealer is ready to advise if you Engine Block Heater: 0 Youtow a trailer often. think something should be added. An engine block heater can a big help be 0 Most trips are through dusty places. if you have topark outside in very cold weather, 0°F (- 18°C) or colder. If your vehicle has this option, see "Engine Block Heater" in the Index,