Cadillac XT4 Owner Manual (GMNA-Localizing-MidEast-13527545) - 2020 -CRC - 9/16/19DRIVING AND OPERATING 221Prohibited FuelsCautionDo not use fuels with any of thefollowing conditions; doing so maydamage the vehicle and void itswarranty:. Fuel with any amount ofmethanol, methylal, ferrocene,and aniline. These fuels cancorrode metal fuel systemparts or damage plastic andrubber parts.. Fuel containing metals suchas methylcyclopentadienylmanganese tricarbonyl(MMT), which can damagethe emissions control systemand spark plugs.. Fuel with a posted octanerating of less than therecommended fuel. Using thisfuel will lower fuel economyand performance, and maydecrease the life of theemissions catalyst.Fuel AdditivesTOP TIER Detergent Gasoline is highlyrecommended for use with yourvehicle. If your country does not haveTOP TIER Detergent Gasoline, addACDelco Fuel System TreatmentPlus-Gasoline to the vehicle’s gasolinefuel tank at every oil change or15 000 km (9,000 mi), whicheveroccurs first. TOP TIER DetergentGasoline and ACDelco Fuel SystemTreatment Plus-Gasoline will helpkeep your vehicle’s engine fuel depositfree and performing optimally. If youare unable to obtain ACDelco FuelSystem Treatment Plus - Gasoline,consult your dealer for the GMapproved additive available in yourcountry.Filling the TankAn arrow on the fuel gauge indicateswhich side of the vehicle the fuel dooris on. See Fuel Gauge 0 110.{ WarningFuel vapors and fuel fires burnviolently and can cause injury ordeath.Follow these guidelines to helpavoid injuries to you and others:. Read and follow all theinstructions on the fuel pumpisland.. Turn off the engine whenrefueling.. Keep sparks, flames, andsmoking materials awayfrom fuel.. Do not leave the fuel pumpunattended.. Avoid using electronic deviceswhile refueling.. Do not re-enter the vehiclewhile pumping fuel.. Keep children away from thefuel pump and never letchildren pump fuel.(Continued)