Black plate (59,1)Cadillac ATS (Europe) - 2013 - crc - 10/8/12Driving and Operating 9-59FuelUse of the recommended fuel is animportant part of the propermaintenance of this vehicle, keepsthe engine clean, and maintainsoptimum vehicle performance.Recommended FuelUse premium unleaded petrol with aposted octane rating or RON of 98or higher. You can also use regularunleaded petrol rated at 95 RON orhigher, but the vehicle's accelerationcould be slightly reduced, and aslight audible knocking noise,commonly referred to as sparkknock, might be heard. If the octaneis less than 95 RON, you mightnotice a heavy knocking noise whenyou drive. If this occurs, use a petrolrated at 98 RON or higher as soonas possible. Otherwise, you coulddamage the engine. If heavyknocking is heard when using petrolrated at 98 RON or higher, theengine needs service.Fuel AdditivesPetrol should contain detergentadditives that help prevent engineand fuel system deposits fromforming. Clean fuel injectors andintake valves will allow the emissioncontrol system to work properly.Some petrol does not containsufficient quantities of additive tokeep fuel injectors and intake valvesclean. To make up for this lack ofdetergency, it is recommended thatGM Fuel System Treatment PLUS(GM Part No. 88861011) be addedto the fuel tank at every engine oilchange or every 15 000 km,whichever occurs first.Petrols containing oxygenates, suchas ethers and ethanol, may beavailable in your area. However,fuels containing more than 15%ethanol, such as E85 (85% ethanol),or more than 15% MTBE (an ether)should not be used in vehicles thatwere not designed for those fuels.See Recommended Fluids andLubricants on page 11‑5 for moreinformation.Notice: This vehicle was notdesigned for fuel that containsmethanol. 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 petrols can contain anoctane-enhancing additive calledmethylcyclopentadienyl manganesetricarbonyl (MMT); ask the attendantwhere you buy petrol whether thefuel contains MMT. We recommendagainst the use of such petrols.Fuels containing MMT can reducespark plug life and affect emissioncontrol system performance. Themalfunction indicator lamp mightturn on. If this occurs, return to yourdealer for service.
