Mercedes-Benz GL-Class: Premium-grade unleaded gasoline - Fuel - Service products and capacities - Technical data - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Premium-grade unleaded gasoline

performance of the engine, only premiumgrade To ensure the longevity and full performance of the engine, only premiumgrade unleaded gasoline must be used.

If no premium-grade unleaded gasoline is available and regular unleaded gasoline must be used, observe the following precautions:

only fill the fuel tank to half full with regular unleaded gasoline and fill the rest with premium-grade unleaded gasoline as soon as possible.
do not drive at the maximum speed.
avoid sudden acceleration.
when the vehicle is carrying a light load, e.g. two passengers without luggage, do not allow the engine to rev above 3000 rpm.
when the vehicle is fully loaded or in mountainous terrain, do not depress the accelerator pedal further than ⅔ of the pedal travel.

    Important safety notes
    WARNING   Gasoline and diesel fuels are highly flammable and poisonous. They burn violently and can cause serious injury. Never allow sparks, flames or smoking materials near gasoline o ...

    Fuel requirements
    Gasoline engines Use only premium-grade unleaded gasoline. The octane number should be at least 91. Details can be found on the gas pump. The octane number is the average value of the Researc ...

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    Additional Maintenance and Care
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    Resetting to factory settings
    For safety reasons, the Daytime Running Lamps function in the Lighting submenu is only reset when the engine is switched off. ► Press on the steering wheel to select the Settings menu. ...

    What to Use
    Refer to Recommended Fluids and Lubricants   to determine what kind of lubricant to use. ...