BMW 3 series E46

Since 1998 of release

Repair and car operation

The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
- The engine
   + Procedures of repair of the engine
   - System of greasing of the engine
      Contour of circulation of oil
      Removal and pallet installation crankcase
      Check of pressure of oil
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ Engine electric equipment
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes

System of greasing of the engine

Engine greasing is carried out by all-weather oil that excludes necessity of replacement of oil at change of a season (summer/winter). A basis of this oil is маловязкое seasonal oil (for example, 10 W) which in a hot condition becomes more viscous by means of so-called “the viscosity stabilizer”. Thereby, effective greasing, both cold, and the hot engine is provided.

(Oils easy oils can be applied to high capacities) also. They represent all-weather oils into which as an additive along with others are entered уменьшители friction factor. In easy oils as a basis so-called synthetic oils are applied.

Terms "mineral", "semisynthetic" or "synthetic" is only instructions on structure of a basis of oil. Depending on full structure various quality of oil can turn out.

Scope viscosity oils/classes

Designation SAE specifies in viscosity of impellent oil.

For example: SAE 10 W 40:

10 viscosity of oil in a cold condition. Than number, especially liquid oil in a cold condition less.

W oil is suitable for application in the winter

40 viscosity of oil in a hot condition. Than number, especially dense oil in a hot condition more.

Special oils BMW long life p/n 07 511470 407

Х can accept values 30, 40, 50

On an illustration viscosity of impellent oil depending on external temperature is shown. These oils can be applied almost to all external temperatures. From an illustration it is visible that scopes of next classes SAE have the general sites that supposes presence of short-term deviations of temperature. However at very low external temperatures starting characteristics of the engine can worsen.

It is supposed to mix oils of various classes of viscosity if there is a necessity of addition of oil, and the external temperature does not correspond to a class of viscosity of oil being in the engine.

It is not supposed to enter additional lubricant additives of any kind neither into fuel, nor in oil.

Спецификациия impellent oil

Quality of impellent oil is characterised by norms of the manufacturer of the car and oil.
The European manufacturers classify the oils under the specification “ACEA” (Association des Constucteurs Europeens de I‘Automobile) which considers, first of all, the European "know-how" of engines. Oils for petrol engines of cars have under specification ACEA classes of quality with А1-96 on А3-96, oils of diesel engines have classes with В1-96 on В3-96. Oils А3 for petrol and В3 for diesel engines have the highest quality.

Classification of impellent oils by the American manufacturers is carried out on system API (API: American Petroleum Institut). The designation consists of two letters. The first letter specifies in a scope: S - Service, it is intended for petrol engines; C - Commercial, it is intended for diesel engines. The second letter specifies in quality in alphabetic order. Oils of API-specification SJ for petrol and CF for diesel engines have the first-rate quality.

Impellent oils which are intended by the manufacturer only for application in diesel engines, should not be applied in petrol engines. There are oils which are intended for application both in petrol, and in diesel engines. In this case both specifications (for example: ACEA А3-96/В3-96 or API SH/CDs) are specified in oil capacities.

Firm BMW for the engines has established other norms and impellent oils classifies as “Longlife-Цle” and “Spezialцle”.