2011 Mercedes R-Class Owner's Manual - Page 357

Service products and capacities Otherwise, you may damage the engine and the exhaust gas aftertreatment. Mercedes-Benz recommends MOBIL OIL. The table shows which engines oil have been approved for your vehicle. Model R 350 BlueTEC R 350 Engine model 642 272 MB Approval 229.51 229.5 355 Refrigerant of the air-conditioning system 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-conditioning system. Brake fluid G Warning! 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. i MB Approval is stated on the containers. Lubricant additives ! Do not mix any lubricant additives with the engine oil. This could damage the engine. Damage resulting from the use of such lubricant additives in the engine oil is not covered by the Mercedes-Benz Limited Warranty. Engine oil viscosity Viscosity describes the flow characteristics of a fluid. If an engine oil has a high viscosity, this means that it is thick; a low viscosity means that it is thin. Select the SAE classification (viscosity) of the engine oil according to the outside temperature. The following table shows you the viscosity classes to be used depending on the average air temperature. Only use brake fluid approved by MercedesBenz. Information about approved brake fluids can be obtained from any authorized Mercedes-Benz Center. Coolant Important safety notes The coolant is a mixture of water and anticorrosion/antifreeze. It performs the following tasks: Ranti-corrosion Rantifreeze protection protection Rraising the boiling point The cooling system is filled with coolant at the factory which contains antifreeze/corrosion inhibitor that ensures protection down to approximately -35 ‡ (-37 †). ! Only use premixed coolant solutions. Adding water and MB 325.0 Anticorrosion/ Z Technical data