Black plate (53,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012Driving and Operating 9-53fuel is used, do not perform anyaggressive driving maneuvers suchas wide open throttle applications.You might also hear audible sparkknock during acceleration. Refill thetank with premium fuel as soon aspossible to avoid damaging theengine. If heavy knocking is heardwhen using gasoline rated at91 octane or higher, the engineneeds service.Gasoline Specifications(U.S. and Canada Only)At a minimum, gasoline shouldmeet ASTM specificationD 4814 in the United States orCAN/CGSB3.5 or 3.511 in Canada.Some gasolines contain anoctane-enhancing additivecalled methylcyclopentadienylmanganese tricarbonyl (MMT).We recommend against the useof gasolines containing MMT.See Fuel Additives on page 954for additional information.California FuelRequirementsIf the vehicle is certified to meetCalifornia Emissions Standards, it isdesigned to operate on fuels thatmeet California specifications.See the underhood emission controllabel. If this fuel is not available instates adopting California EmissionsStandards, the vehicle will operatesatisfactorily on fuels meetingfederal specifications, but emissioncontrol system performance mightbe affected. The malfunctionindicator lamp could turn on and thevehicle might fail a smogcheck test.See Malfunction Indicator Lamp onpage 520. If this occurs, return toyour authorized dealer for diagnosis.If it is determined that the conditionis caused by the type of fuel used,repairs might not be covered by thevehicle warranty.Fuels in ForeignCountriesNever use leaded gasoline or anyother fuel not recommended in theprevious text on fuel. Costly repairscaused by use of improper fuelwould not be covered by the vehiclewarranty.To check the fuel availability, ask anauto club, or contact a major oilcompany that does business in thecountry where you will be driving.
