2011 Mercedes R-Class Owner's Manual - Page 163

Refueling G Warning! Diesel Fuel grade ! Only refuel with ULTRA-LOW SULFUR DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM). Using other diesel fuels could result in increased wear and damage to the engine and/or exhaust system. Never refuel with marine diesel or heating oil. Do not mix these fuels with diesel fuels and do not use any special additives, as this may result in damage. ! When refueling using a fuel can, use a filter or use a clean cloth as a filter. Otherwise, particles from the fuel can may block the fuel lines and/or the diesel injection system. i Refuel only with ULTRA-LOW SULFUR DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM). 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. You can find further information under "Fuel" (Y page 352), by consulting an authorized Mercedes-Benz Center or by visiting http://www.mbusa.com (USA only). Low outside temperatures ! Do not use gasoline to refuel vehicles with a diesel engine. Never mix diesel with gasoline or kerosene, as this may result in damage to the engine or fuel system. Diesel fuel with improved cold flow properties is available during the winter months. Further information on fuel properties can be obtained from oil companies, e.g. at gas stations. 161 ! Do not use gasoline to refuel vehicles with a diesel engine. 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. ! Do not start the engine if you accidentally refuel with the wrong fuel. Otherwise, the fuel could enter the fuel lines. This would require draining of the fuel tank and fuel lines. Notify a qualified specialist workshop and have the fuel tank and fuel lines drained completely. Gasoline Fuel grade ! You should only refuel with unleaded premium-grade gasoline as this avoids damaging the catalytic converter. 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. You can find further information under "Fuel" (Y page 352), by consulting an authorized Mercedes-Benz Center or visiting http://www.mbusa.com (USA only). Z Driving and parking Do not fill diesel tanks with gasoline. Do not mix diesel fuel with gasoline. Otherwise the fuel system and engine could be damaged. In addition, the vehicle could catch fire.