1993 GMC Safari Owner's Manual - Page 252

Service & Appearance Cam a EnergyConserving II Oils with these words on the container will help you save fuel. Thedoughnut-shapedlogo(symbol)isusedonmostoilcontainersto help you select the correct oil. You shouldlookforthisontheoilcontainer,anduse that display the logo. GM Goodwrench@ oil (inCanada, GMEngineOil)meets requirements for your vehicle. only thoseoils allthe EngineOilAdditives: Don'taddanythingtoyouroil. Your General if youthinksomethingshouldbeadded. Motorsdealerisreadytoadvise WhentoChangeEngineOil: e e See if anyoneofthese is true for you: 10 miles Mosttripsarelessthan 4 miles (6 km). It'sbelowfreezingoutsideandmosttripsarelessthan (16 km). Theengine is atlowspeedmostofthetime(as or in stop-and-go traffic). in door-to-doordelivery, e 0 Youtow a trailer often. Most trips are through dusty places. If anyoneoftheseistrueforyourvehicle,thenyouneedtochange your oil andfilter every 3,000miles (5000 km)or 3 months-whichever comes first. I none ofthem istrue,changethe oil every 7,500 miles (12 500 km)or f 12 months-whichevercomesfirst.Changethefilteratthe first oil change and at every other oil change after that. Engine Block Heater: Anengineblockheatercanbeabighelp if youhave 0°F (-18°C) colder. If yourvehicle or toparkoutsideinverycoldweather, hasthisoption,see"EngineBlockHeater" in theIndex. 6-1 4