Mercedes-Benz GL-Class: Checking and adding other serviceproducts - Engine compartment - Maintenance and care - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Checking and adding other serviceproducts

Adding engine oil
Environmental note When adding oil, take care not to spill any. If oil enters the soil or waterways, it is harmful to the environment. WARNING   If engine oil comes into contact with ho ...

Checking the coolant level
Only check the coolant level when the vehicle is on a level surface and the engine has cooled down. ► Turn the SmartKey to position 2 in the ignition lock. On vehicles with KEYLESS-GO, ...

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Octane rating
Premium unleaded gasoline with a Cost of Living Council (CLC) or Anti Knock Index (AKI) octane rating of 91 or higher should be used. NOTICE Even a very small amount of leaded fuel will damag ...

General notes
USA only: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. this device mus ...

Problems with fuel and the fuel tank
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