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Audi A4since 1994 releaseRepair and operation of the car |
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A4 Audi + Running gear - Regular servicing Installation in a starting position of the indicator of frequency of maintenance Crossing of dates of maintenance The plan of maintenance for the motorist Diagnostics in Audi workshop Diagnostics of an executive element Poll of a database of malfunctions Diagnostics as the help to the fan Identification of the car Safety measures on a workplace Jacks Greasing of all details Check of level of oil Oil consumption Oil choice with the correct specification Viscosity of oil Correctly picked up engine oil for Audi Replacement of engine oil and oil filter Check of level of liquid in system of a servoupravleniye Check of level of oil in a mechanical transmission Check of level of oil in the drive of the back bridge Control of the ATF level in an automatic transmission Check of level of oil in the main transfer of an automatic transmission Replacement of ATF Greasing of drafts, hinges and locks + Engines + Turbo-supercharging + System of an exhaust + Cooling system + Fuel tank and fuel pump + Air filter and channels of absorption + System of injection + Coupling + Transmission and main transfer + Suspension bracket of wheels and steering + Brakes + Wheels and tires + Electrotechnical equipment + System of ignition + Lighting + Alarm equipment + Tools and devices + Heating and ventilation + body Details + Salon Search of malfunctions Technical characteristics |
Viscosity of oil Oil fluidity – i.e. degree of its density or a razzhizhennost – has to be suitable for application in the engine. Compliance to two criteria is necessary:
On graphics recommendations of Audi/Volkswagen firms concerning viscosity of oil are shown: Classes of oils according to SAE Society of autotractor engineers (Society of Automotive Engineers, the USA) divided all oils on degree of their viscosity into classes. Classification of engine oils begins with liquid winter oil (winter – Winter) SAE 5 W, 10 W, 15 W, then an intermediate step of SAE 20 W/20 and comes to an end with viscous summer oils (summer – Sommer) SAE 30, 40 and 50. Seasonal oil Seasonal oil was the cheapest engine oil earlier. For optimum greasing of the engine in it it is necessary to fill in dense or liquid seasonal oil according to a season. Now seasonal oils are almost not on sale (Germany means), but they still are often applied in vehicle fleets. Use of seasonal oil is not provided in Audi A4. All-weather oil More trudozatratny in production and therefore more expensive, than seasonal oil, all-weather oil found the broadest application today. For improvement of viscous and temperature properties (VI) in it long chains of molecules which when heating inflate contain in quality of additive and again contract when cooling. In this regard oil can plastically adapt to temperature and according to the characteristics to cover some classes of viscosity. SAE 15 W-50 oil at a temperature of -15 °C corresponds to a class of viscosity 15 W and at 100 °C – to a class 50. |
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