VOLKSWAGEN GOLF IV

since 1997 of release

Repair and car operation



Foltsvagen Golf 4
+ 1. Maintenance instruction
- 2. Engine
   - 2.1. Petrol engines
      2.1.1. Technical characteristics
      2.1.2. Removal and installation of the bottom mudguard of a motor compartment
      + 2.1.3. Engine 1,6-/1,8-I
      + 2.1.4. Engine 1,4-I
      + 2.1.5. The engine 2,3 - I-VR5
      2.1.6. Compression check in engine cylinders
      + 2.1.7. Removal and installation of a poliklinovy belt
      - 2.1.8. Recommendations about engine oils
         2.1.8.1. Viscosity of oil
         2.1.8.2. All-weather oils
         2.1.8.3. Oil with the increased lubricant properties
         2.1.8.4. Classes of viscosity and range of use of oil
         2.1.8.5. Engine oils
      + 2.1.9. Circulation of engine oil
      2.1.10. Check of pressure of oil and sensor of pressure of oil
      2.1.11. Removal and installation of the oil pallet
      2.1.12. Engine start after major maintenance
      2.1.13. Diagnostics of malfunctions of the engine
      2.1.14. Main malfunctions of system of greasing
   + 2.2. Diesel engines
+ 3. Cooling system
+ 4. Fuel system
+ 5. Exhaust system
+ 6. Ventilation and heating system
+ 7. Coupling
+ 8. Transmission
+ 9. Suspension brackets and power shafts
+ 10. Steering
+ 11. Wheels and tires
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment and electroschemes






2.1.8. Recommendations about engine oils

2.1.8.1. Viscosity of oil

GENERAL INFORMATION

Viscosity characterizes fluidity of oil. Depending on temperature oil tends to fluidity reduction. In process of increase in temperature oil becomes more fluid. It worsens a stseplyaemost of oil and ability to maintain high contact pressures. When 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 changes 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 got into all places where greasing is necessary quicker.

Fluidity of oil is equivalent to its internal friction and SAE 30, SAE 10 is designated by units of SAE (Society of Automotive Engineers), for example. The high indicator of SAE means that oil dense, low characterizes liquid oil. Nevertheless, viscosity of oil completely does not characterize lubricant properties of oil.