2010 Mercedes ML-Class Owner's Manual - Page 213

At the gas station ! Never refuel vehicles with gasoline engine with diesel fuel. Never refuel vehicles with diesel engine with gasoline. Even small amounts of incorrect fuel will damage the fuel system and engine. Damage resulting from the use of non-approved fuels or fuel additives or resulting from mixing gasoline with diesel fuel or vice versa is not covered by the Mercedes-Benz Limited Warranty. ! If you have accidentally filled the tank with incorrect or non-approved fuel, do not switch on the ignition. Otherwise the incorrect or non-approved fuel will get into the fuel lines. The fuel system must be drained completely. Contact an authorized Mercedes-Benz Center to have the fuel system drained completely. ! Gasoline engine: To prevent damage to the catalytic converters, only use premium unleaded gasoline in this vehicle. Any noticeable irregularities in engine operation should be repaired promptly. Otherwise, excessive unburned fuel may reach the catalytic converter, causing it to overheat and potentially start a fire. ! Diesel engine: When filling the diesel fuel tank using fuel containers, place a filling filter, a suede cloth or a clean flannel cloth as a filter. Otherwise, particles from the fuel container could clog the fuel lines and/or the diesel injection system. ! Diesel engine: The engine is more susceptible to wear and damage if you use Rmarine diesel fuel Rheating oil Radditives The exhaust aftertreatment device will be seriously damaged if you use any other diesel fuel than ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM). The use of such non-approved fuels and/or special additives is not covered by the Mercedes-Benz Limited Warranty. 211 i Gasoline engine: Only use premium unleaded gasoline with a minimum Posted Octane Rating of 91 (average of 96 RON/86 MON). Information on gasoline quality can normally be found on the fuel pump. Please contact gas station personnel in case labels on the pump cannot be found. For more information on gasoline, see "Premium unleaded gasoline (gasoline engine)" (Y page 360), see "Fuel requirements" (Y page 360), or contact an authorized Mercedes-Benz Center, or visit www.mbusa.com (USA only). i Diesel engine: Only use commercially available vehicular ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM). Information on diesel quality can normally be found on the fuel pump. Please contact gas station personnel in case labels on the pump cannot be found. For more information on diesel fuels, see "Fuel requirements" (Y page 360), or contact an authorized Mercedes-Benz Center, or visit www.mbusa.com (USA only). i Diesel engine: If you have driven the vehicle until the tank is empty, the fuel system needs to be bled (Y page 331). Locking/unlocking the vehicle with the SmartKey or KEYLESS-GO automatically locks/unlocks the fuel filler flap. i In case the central locking system does not release the fuel filler flap, see "Fuel filler flap" (Y page 308). Z Operation