2011 Mercedes C-Class Owner's Manual - Page 147

Refueling Refueling Important safety notes G Warning Gasoline is highly flammable and poisonous. It burns violently and can cause serious personal injury. Never allow sparks, flames or smoking materials near gasoline. Turn off the engine before refueling. Whenever you are around gasoline, avoid inhaling fumes and any skin or clothing contact. Direct skin contact with fuels and the inhalation of fuel vapors are damaging to your health. 145 gasoline Fuel grade ! You should only refuel with unleaded premium-grade gasoline as this avoids damaging the catalytic converter. Flexible fuel vehicles (recognizable by the sticker Premium gasoline or E85 only! on the inside of the fuel filler flap) can be refueled with E85. For further information on flexible fuel, see "Fuel". If engine running problems are apparent, have the cause checked immediately and repaired. Excess unburned fuel can otherwise enter the catalytic converter, leading to overheating and possibly causing a fire. i Only refuel with unleaded premium-grade gasoline with a specified minimum octane number of 91 (average value of 96 RON/ 86 MON). Usually you will find information about the fuel grade on the pump. If you cannot find the label on the gasoline pump, ask the gas station staff. C 300 and C 300 Sport with automatic transmission: you can recognize flexible fuel vehicles by the sticker Premium gasoline or E85 only! on the inside of the fuel filler flap. You can find further information under "Fuel" (Y page 306), by consulting an authorized Mercedes-Benz Center or visiting http://www.mbusa.com (USA only). G Warning Overfilling of the fuel tank may create pressure in the system which could cause a gas discharge. This could cause the gasoline to spray back out when removing the fuel pump nozzle, which could cause personal injury. C 300 and C 300 Sport with automatic transmission: Flexible Fuel Vehicles (identified by a label reading Premium gasoline or E85 only! on the fuel filler flap): Ethanol fuel (E85) and its fumes are highly flammable, poisonous and burn easily. Ethanol fuel can cause serious injuries if ignited or if you come into contact with it or inhale fumes of it. Avoid inhalation of ethanol fumes and skin contact with ethanol. Extinguish all open flames before refueling. Never smoke or create sparks close to ethanol. G Warning! ! Do not use diesel to refuel vehicles with a gasoline engine. Even small amounts of the wrong fuel result in damage to the fuel system and engine. Z Driving and parking ! Do not switch on the ignition if you accidentally refuel with the wrong fuel. Otherwise, the fuel will enter the fuel lines. Notify a qualified specialist workshop and have the fuel tank and fuel lines drained completely.