Audi 80/Avant (B4)
Since 1991-1995 of release
Repair and car operation
- The description
Dynamics of movement at a dry road covering
Instructions on operation for all-wheel drive cars
Blocking of differential of the back bridge
The workplace organisation
The oil expense
Correct choice of engine oil
Replacement of engine oil and the oil filter
Check of level of a working liquid of the amplifier of a wheel
Check of level of oil of a mechanical transmission
Check of level of oil in a drive of the back bridge
The control of level ATF in an automatic transmission
Check of level of oil in the main transfer of an automatic transmission
Greasing тросовых drives, hinges and locks
+ System of release of the fulfilled gases
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and воздухозаборные channels
+ Injection system
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Antiblocking system of brakes
+ Wheels and tyres
+ Kuzovnaja electrosystem
+ Ignition system
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
The oil expense
The engine oil part burns down during lubricant action. So the oil expense is absolutely natural process. Well обкатанные engines spend 0,2 l for 1000 km, Audi names as much as possible admissible indicator the expense of 1,0 l on 1000 km.
The zero expense of oil is suspicious
At winter operation on short distances can be and so that oil level between measurements is not diminished at all or even increases. It at all an occasion to pleasure because means that engine oil is diluted with fuel or a condensate. This oil changing the property is necessary for "boiling" during regular distant trips that the condensate has evaporated. In the end of a trip it is necessary to check up oil level because it considerably will fall because of evaporation of parts of gasoline and a condensate! At extreme operation in a city without intermediate trips on a long distance it will be better, if you change oil before the usual; probably, already after 3000 km or four months.
The correct specification of oil
As at rather long, 15 000 km, intervals of replacement of oil there is a danger of formation of a deposit in oil картере, Audi has let out strict instructions to oil.
Viscosity of oil
Fluidity of oil, that is its viscosity, should correspond to requirements for application in the given engine. Thus it is necessary to remember two criteria:
Classes on SAE
American Society of Automotive Engineers has distributed oils on classes according to their viscosity.
These classes begin at engine oils with liquid winter (winter) oils SAE 5W, 10W, 15W through intermediate step SAE 20W/20 to viscous summer oils SAE 30, 40 and 50.
Manufacture of all-weather oil applied today is more difficult, and consequently all-weather oil accordingly more expensive, than seasonal. As an additive improving an index of viscosity, at it there are long chains of molecules which "inflate" at heating and again lose in volume at cooling. In this case oil can "elastically adapt to temperatures and cover many classes of viscosity. Oil SAE 15W-50 corresponds at temperature in–15°C to a viscosity class 15W, and at 100°C – to a class 50.
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