Auto Manual of VW Passat B5
The maintenance instruction
1. Maintenance service
- 2. Engines
2.2. The general information
2.3. The bottom mudguard of a motor compartment
2.4. The four-cylinder petrol engine
2.5. The diesel engine 1,9-I-TDI
2.6. A drive газораспределительного the mechanism
- 2.7. The engine 2,8-I-V6
2.7.2. Removal and installation of a head of the block of cylinders
2.7.3. Compression check in engine cylinders
2.7.4. Check of the engine by means of the vacuum gauge
2.7.5. Removal and installation поликлинового a belt
2.7.6. The general recommendations about engine oils
2.7.7. Кругооборот engine oil
2.7.8. Check of pressure of oil and the gauge of pressure of oil
2.7.9. Removal and installation of the oil pallet
2.7.10. Start of the engine after major repairs
2.7.11. The basic malfunctions at engine start
2.7.12. The basic malfunctions of system of greasing
3. Cooling system
4. Fuel system
5. Engine management
6. An exhaust system
8. A running gear
9. A steering
10. Brake system
11. A body
12. Heating, ventilation
13. An electric equipment
Viscosity of oil
Viscosity of engine oils
Viscosity characterises fluidity of oil. Depending on temperature oil tends to fluidity reduction. In process of increase in temperature oil becomes more fluid. It worsens ability of oil to сцепляемости and stability to maintain high contact pressure. At cooling oil gets denser, fluidity decreases and the internal friction increases. Because of this property it is necessary to apply engine oil with such viscosity which varies at change of temperature in probably smaller limits.
At start of the cold engine oil should be sufficiently liquid excessively not to overload the engine and that after start oil has fast got into all places where greasing is necessary.
Fluidity of oil is equivalent to its internal friction and is designated by units SAE (Society of Automotive Engineers - Association of Automobile Engineers), for example SAE 30, SAE 10. High indicator SAE means that oil dense, low – characterises liquid oil. Nevertheless, viscosity of oil completely does not characterise lubricant properties of oil.
Letter W (winter – winter) in designation SAE characterises suitability of use of oil during the winter period.
At long external temperatures more low–20 With it is recommended to fill in oil SAE 5W-20.
For modern engines it is necessary to use only oils D. Oils HD are oils with the raised lubricant properties improved at the expense of various additives. These additives provide the best anticorrosive protection, more favorable conditions against the oxidation phenomenon, the least propensity to formation of slags, the best change of the viscosity, clearing and dissolving properties. Clearing and dissolving additives not only reduce formation of the rests in the engine, but also ability these rests and all other pollution in engine oil simultaneously possess to dissolve and hold in a suspension so that at oil replacement these pollution leave together with merged oil.
Quality of oils HD is defined on system API (American Petroleum Institut). The European manufacturers also adhere to this system.
The designation of a grade of oil is made by two letters. The first letter характери зует a scope: S – Servise, are intended for carburettor engines; With – Commercial, are intended for diesel engines.
The second letter defines an oil grade in alphabetic order.
Premium oils on classification API are SG for carburettor engines and CD for diesel engines.
And – all-weather oils with the raised antifrictional properties, specification VW 500 00.
In – all-weather oils, specification VW 501 01;
In – all-weather oils, specification VW 505 00 (it is unlimited for all diesel engines);