Audi A4

since 1994 of release

Repair and car operation



A4 Audi
+ Running gear
- Regular servicing
   Installation in a starting position of the indicator of periodicity of maintenance
   Crossing of dates of maintenance
   The maintenance plan 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
   Car identification
   Safety measures on a workplace
   Jacks
   Greasing of all details
   Check of level of oil
   Consumption of oil
   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 servoupravleniye system
   Check of level of oil in a mechanical transmission
   Check of level of oil in a drive of the back bridge
   Control of level of ATF in an automatic transmission
   Check of level of oil in the main transfer of an automatic transmission
   ATF replacement
   Greasing of drafts, hinges and locks
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics





Viscosity of oil

Fluidity of oil – i.e. degree of its density or a razzhizhennost – should be suitable for application in the engine. Compliance to two criteria is necessary:

  • It should not be too viscous as the starter should turn the cold motor so that after cold start oil reached at once all points of greasing.
  • It should not be too liquid because at high temperatures and turns in an oil film there can be gaps.

 

On graphics recommendations of Audi/Volkswagen firms concerning viscosity of oil are shown:

And – all-weather oils according to the VW 500 00 standard;
In – all-weather oils according to the VW 500 01 standard.

The called parameters are understood as for a long time operating temperatures. Short-term fluctuations do not play a role.

Classes of oils SAE agrees

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 of 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 almost are not on sale (Germany) means, but they still are often applied in vehicle fleets. Application of seasonal oil in Audi A4 is not provided.

All-weather oil

More trudozatratny in manufacturing and consequently more expensive, than seasonal oil, all-weather oil found today the widest application. For improvement of vyazkostno-temperature properties (VI) it contains in quality of an additive long chains of molecules which when heating inflate and are again compressed 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 temperature of-15 °C corresponds to a class of viscosity of 15 W and at 100 °C – to a class 50.

All-weather oils of the classes SAE 10 W-30 and 10 W-40 are not recommended for application in Audi engines in a warm season.