Safari Van 2WD V6-4.3L VIN X (2003)
Fuel: Specifications
GASOLINE OCTANE
Use regular unleaded gasoline with a posted octane of 87 or higher. If the octane is less than 87, you may get a heavy knocking noise when you drive.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you might damage your engine. A little pinging noise when
you accelerate or drive uphill is considered normal. This does not indicate a problem exists or that a higher-octane fuel is necessary. If you are using
87 octane or higher-octane fuel and you hear heavy knocking, your engine needs service.
ADDITIVES
To provide cleaner air, all gasoline in the United States are now required to contain additives that will help prevent engine and fuel system deposits
from forming, allowing your emission control system to work properly. You should not have to add anything to your fuel. Gasoline containing
oxygenates, such as ethers and ethanol, and reformulated gasoline may be available in your area to contribute to clean air. General Motors
recommends that you use these gasoline, particularly if they comply with the specifications described earlier.
NOTICE: Your vehicle was not designed for fuel that contains methanol. Don't use fuel containing methanol. It can corrode metal parts in your fuel
system and also damage the plastic and rubber parts. That damage wouldn't be covered under your warranty.
Some gasoline that are not reformulated for low emissions may contain an octane-enhancing additive called methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attendant where you buy gasoline whether the fuel contains MMT. General Motors does not recommend the use of such
gasoline. Fuels containing MMT can reduce the life of spark plugs and the performance of the emission control system may be affected. The
malfunction indicator lamp may turn on. If this occurs, return to your authorized GM dealer for service.
CALIFORNIA FUEL
If your vehicle is certified to meet California Emission Standards (see the underhood emission control label), it is designed to operate on fuels that
meet California specifications. If this fuel is not available in states adopting California emissions standards, your vehicle will operate satisfactorily on
fuels meeting federal specifications, but emission control system performance may be affected. The malfunction indicator lamp may turn on (see
Malfunction Indicator Lamp ) and your vehicle may fail a smog-check test. If this occurs, return to your authorized GM dealer for diagnosis. If it is
determined that the condition is caused by the type of fuel used, repairs may not be covered by your warranty.
