Mercedes-Benz GL-Class: Brake fluid - Service products and capacities - Technical data - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Brake fluid

WARNING The brake fluid constantly absorbs moisture 
The brake fluid constantly absorbs moisture from the air; this lowers its boiling point.
If the boiling point of the brake fluid is too low, vapor pockets may form in the brake system when the brakes are applied hard (e.g. when driving downhill). This would impair braking efficiency.
You should have the brake fluid renewed at regular intervals. The brake fluid change intervals can be found in the Service Booklet.

Only use brake fluid approved by Mercedes- Benz. Information about approved brake fluids can be obtained from any authorized Mercedes-Benz Center.

    Refrigerant of the air-conditioningsystem
    The air-conditioning system is filled with R134a refrigerant and a special PAG lubricant. Never use refrigerant R 12 (CFC) or mineral lubricants. Otherwise, you could damage the air-condition ...

    Coolant
    Important safety notes The coolant is a mixture of water and antifreeze/corrosion inhibitor. It performs the following tasks: • anti-corrosion protection • antifreeze protection • raising ...

    See also:

    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 ...

    Opening and closing the tailgate
    NOTICE Ensure there is minimum space of 39 in (1.0 m) above the rear of the vehicle before operating the tailgate. Insufficient space may result in damage to the vehicle. Do not operate the ...

    Engine Compartment Fuse Block
    The underhood fuse block is located in the engine compartment, on the passenger side of the vehicle. Lift the cover for access to the fuse/relay block. Notice: Spilling liquid on any electrical ...