Black plate (49,1)Cadillac Escalade/Escalade ESV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-6081529) - 2014 - CRC 1st Edition - 4/23/13Driving and Operating 9-49FuelUse of the recommended fuel is animportant part of the propermaintenance of this vehicle. To helpkeep the engine clean and maintainoptimum vehicle performance, werecommend using TOP TIERDetergent Gasolines. Seewww.toptiergas.com for a list of TOPTIER Detergent Gasolines.If the vehicle has a yellow fuel cap,E85 or flex fuel can be used in thevehicle. See E85 or FlexFuel onpage 9-50.Recommended FuelUse premium unleaded gasolinewith a posted octane rating of 91 orhigher. Regular unleaded gasolinerated at 87 octane or higher can beused, but acceleration could bereduced, and an audible knockingnoise may be heard. If the octane isless than 87, a heavy knockingnoise may be heard. If this occurs,use a gasoline rated at 87 octane orhigher as soon as possible.Otherwise, the engine could bedamaged. If heavy knocking isheard when using gasoline with ahigher octane rating, the engineneeds service.Use of Seasonal FuelsUse summer and winter fuels in theappropriate season. Driving orstarting could be affected if theincorrect fuel is used. Drive thevehicle with the engine running untilthe fuel is a half tank or less, thenrefuel with the current seasonal fuel.Prohibited FuelsGasolines containing oxygenates,such as ethers and ethanol, as wellas reformulated gasolines areavailable in some cities. If thesegasolines comply with thepreviously described specification,then they are acceptable to use.However, E85 and other fuelscontaining more than 15% ethanolmust be used only in FlexFuelvehicles.Notice: Do not use fuelcontaining methanol. It cancorrode metal parts in the fuelsystem and also damage plasticand rubber parts. That damagewould not be covered under thevehicle warranty.Some gasolines that are notreformulated for low emissions cancontain an octane-enhancingadditive calledmethylcyclopentadienyl manganesetricarbonyl (MMT). Do not usegasolines with MMT as they canreduce spark plug life and affect
