Gasoline SpecificationsAt a minimum, gasoline should meet ASTM specificationD 4814 in the United States or CAN/CGSB-3.5 or3.511 in Canada. Some gasolines contain anoctane-enhancing additive called methylcyclopentadienylmanganese tricarbonyl (MMT). We recommendagainst the use of gasolines containing MMT. SeeAdditives on page 5-6 for additional information.California FuelIf your vehicle is certified to meet California EmissionsStandards, it is designed to operate on fuels that meetCalifornia specifications. See the underhood emissioncontrol label. If this fuel is not available in states adoptingCalifornia emissions standards, your vehicle will operatesatisfactorily on fuels meeting federal specifications, butemission control system performance might be affected.The malfunction indicator lamp could turn on and yourvehicle might fail a smog-check test. See MalfunctionIndicator Lamp on page 3-40. If this occurs, return to yourauthorized dealer/retailer for diagnosis. If it is determinedthat the condition is caused by the type of fuel used,repairs might not be covered by your warranty.AdditivesTo provide cleaner air, all gasolines in the United Statesare now required to contain additives that help preventengine and fuel system deposits from forming, allowingthe emission control system to work properly. Inmost cases, you should not have to add anything to thefuel. However, some gasolines contain only theminimum amount of additive required to meet U.S.Environmental Protection Agency regulations. To helpkeep fuel injectors and intake valves clean, or ifyour vehicle experiences problems due to dirty injectorsor valves, look for gasoline that is advertised as TOPTIER Detergent Gasoline. Also, your dealer/retailer hasadditives that will help correct and prevent mostdeposit-related problems.5-6
