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Motor oil
Modern high performance engine special requirements for motor oils. Oil should not evaporate and the oil film - terminate at high temperatures, the working surfaces of cylinders. The oil should burn without residues bind carbon black and dirt so that they do not lay in the engine. To effectively combat sediments in the oil system of the engine oil must be of high flushing properties and high wear resistance. Timely replacement of oil is necessary for flawless operation of the engine
Choosing oil From Mercedes for its diesel engine oil recommended by the following brands: 1. SSMS-D4, CCMC-D5 and SSMS-PD2. Oil grade API CE and CF-4 qualification API used only if there is no available SSMS oil grades. It does not matter whether you have filled in the oil in the station, or bought it, the packaging should be one of the recommended oil grades.
Technical Dictionary Viscosity. The measure expires lubricating properties of the oil. In winter, the engine oil should be so liquid that immediately after the cold start to grease all the necessary components. In summer, in contrast, requires a thick oil at high temperatures to avoid violating the integrity of the lubricant film. |
SAE-class (Society of Automotive Engineers). Does viscosity grade such as SAE 15W-40. The lower the first number, the less viscous oil in the cold (?�W?� - winter). Oil 0W has lubricating properties at -30 ?� C 5W - at -25 ?� C, and 15W - at -15 ?� C. The higher the second number, the better the oil withstands high temperatures. ACEA (Associacion des Constructeurs Europeen d'Automobiles). Introduced in 1996, the European norm of oil. It replaces normal SSMS. For gasoline engines, there are marks A1 (oil containing a small amount of purified alcohol), A2 (with a small amount of oil additives), A3 (highly oil). For diesel engines, there are marks B1, B2 and B3. SSMS (Comittee des Constructeurs d'Automoboles du Marche Commun). The specification includes the letter ?�G?� (petrol engines) and ?�PD?� (diesel engines), as well as number. The higher the number, the better the quality of the oil. API (American Petroleum Institute). The specification consists of the letters ?�S?� (petrol engines), "C" (diesel engines), and others. The farther spaced from beginning letter of the alphabet, the higher the quality of the oil.
2. Oils labeled SSMS-G4 / G5 or API SG designed for gasoline engines, so they can not be used for diesel engines Mercedes. But if the package is a double marking, such as SSMS-G4 / PD2, this oil is suitable for both types of engines.
| Fig. 4.32. The scale operating ranges oils
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In the European region, with a wide range of winter and summer temperatures throughout the year, you can use the oil viscosity grade 15W-40 (Fig. 4.32) or 10W-40. Only at very low or high temperatures persisting for a long time, you should use a different oil viscosity. Crankcase Ventilation Serviceable engine is forced through the piston rings into the crankcase 50 to 70 liters per minute of exhaust gases. These gasses must be removed from the engine so as not to create high loads on the seal. This is done through the crankcase ventilation. Oil consumption Part of the oil burnt in the lubrication of the pistons. Well-tuned engine consumes about 0.2 liters per 1,000 km, from Mercedes maximum oil consumption - 1.5 liters per 1,000 km.
PRACTICAL ADVICE Big oil consumption Pay attention to the following circumstances: 1. Before you can control the flow of oil, make sure that it does not leak out of the engine (a visual inspection of the engine). 2. If the oil level above the maximum mark on the dipstick, the oil consumption will always be greater, as its excess is removed through the ventilation system. 3. Universal oil requires constant review. 4. The sharp style of driving not only increases fuel consumption, but also oil, especially when driving at high speeds. 5. Oil consumption is always greater in the run-in of the new car (minimum - 5000 km). 6. The motor may be faulty. |
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