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Mercedes of the S-class W2021993-2000 of releaseRepair and operation of the car |
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Mercedes W202 + 1.2. General information + 2. Maintenance + 3. Engines - 4. Lubrication system 4.2. Specification of engine oil 4.3. Scope viscosity oils / class 4.4. Oil consumption 4.5. Contour of circulation of oil (DD) 4.6. Oil reducing valve + 4.7. Oil pallet 4.8. Oil level indicator 4.9. The heat exchanger oil - / cooling liquid 4.10. Diagnostics of malfunctions in an oil circulation contour + 5. Cooling system + 6. Heating, ventilation + 7. System of ignition + 8. Fuel system + 9. Transmission + 10. Running gear + 11. Steering + 12. Brake system + 13. Body + 14. Electric equipment + 14.2. Electrical circuitries |
4.2. Specification of engine oil
In modern engines use only of HD oils is allowed. They represent the alloyed oils which lubricant properties are considerably improved at the expense of additive of various chemical biocatalysts. These additives improve protection against corrosion, reduce oxidation, in particular, formation of a deposit in an engine case, is improved by viscosity of oils and their dissolving properties. The clearing and dissolving additives not only reduce formation of deposits in the engine, but also dissolve these deposits, make small all other mechanical impurity in engine oil and support them in suspension so they leave when replacing oil. Quality of HD engine oils is estimated according to the API system (API – the American Petroleum Institute). The European manufacturers are also guided by this system. Oils are designated by two letters. The first letter in designation – a scope: S – service, it is suitable for carburetor engines; With – commercial, is suitable for diesel engines. The second letter means quality in alphabetical order. The highest quality according to the API specification: SG – for petrol engines and CF – for diesel. Prevention |
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