BMW 3 series E30

Since 1983-1994 of release

Repair and car operation



BMW E30
+ 1. The maintenance instruction
+ 2. Maintenance service
+ 3. The engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. An exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. A running gear
+ 12. A body
+ 13. An electric equipment
- 14. A good advice
   14.2. Changed numbers
   14.3. Purchase of the old car or a mysterious set of figures and letters
   14.4. Durability of the car
   14.5. About parallelism of bridges of the car and the trailer
   14.6. Preparation of the car for winter
   14.7. A rule 35
   14.8. A choice of the second-hand car
   14.9. Engine oils
   14.10. That it is necessary to know, changing oil
   14.11. Occurrence in deposit oil
   14.12. Whether it is possible to mix import oils?
   14.13. "Eats" much, but silently goes
   14.14. It is more likely live, than it is dead …
   14.15. It is not got - a good advice
   14.16. Visit to car-care centre
   14.17. A gear belt for a mechanism drive timing
   14.18. Deterioration of pistons
   14.19. Valves
   14.20. Bearings of engines
   14.21. Engine pollution
   14.22. As the conditioner works and what to do, if it has failed
   14.23. The conditioner: not only "pluses", but also "minuses"
   14.24. Rules of service of the conditioner
   14.25. It is not necessary to stir antifreeze with antifreeze …
   14.26. That it is necessary to know at purchase of the air filter
   14.27. An engine overheat
   14.28. That it is necessary to know to the owner of the car with инжекторным the engine
   14.29. The accumulator
   14.30. Possible malfunctions of the storage battery
   14.31. What to do with the failed generator
   14.32. The belt is guilty, and we blame the generator
   14.33. The catalyst
   14.34. Three in one - or how to save the catalyst
   14.35. slip
   14.36. Features of operation of brake system
   14.37. Malfunctions of brake system
   14.38. Brake liquids
   14.39. ABS: a natural choice
   14.40. Wheel disks
   14.41. We update wheel disks
   14.42. The scheme of marks of an automobile tyre
   14.43. Metal corrosion
   14.44. An automake-up
   14.45. What creaks?
   14.46. The hatch
   14.47. A safety pillow: troubles or pleasures?
   14.48. We fit well?
   14.49. Anticreeping "immunodeficiency"
   14.50. Why headlights grow dull
   14.51. "Галогенки"
   14.52. About correct adjustment of headlights
   14.53. The electric motor
   14.54. From change of places "composed" varies nothing?





14.21. Engine pollution
THE GENERAL DATA

In an operating time the engine and all its systems gradually become soiled even at correct operation and use of qualitative fuels-lubricants, not to mention the poor-quality. How to get rid of these stratifications?

For removal of resinous, varnish and other adjournment, deposits special solvents are necessary. Such preparations are studied and used already more than 70 years. The structure of solvents and cleaners can include mineral oil (kerosene, маловязкое oil, diesel fuel, easy gasoline), aromatic hydrocarbons (benzene, toluene, ксилол, naphthalene, a mix коксохимического manufactures), spirits (метанол, the ethanol, some higher spirits), хлорпродукты (хлорнафталин, хлордифенилоксид, four-chloric carbon, хлорбензол, дихлорэтан, etc.) Turpentine, этилацетат, acetone. Sometimes add нафтенат lead, стеарат the aluminium, some vegetative both animal oils and fats, acetic acid or its anhydride, ammoniac connections, etc. Structure of various solvents and cleaners неодинаков. The overwhelming majority of them has strong dissolving properties and, unfortunately, operate not only on adjournment, but also on polymers. Besides, they differ high toxicity and коррозийностью. Therefore it is necessary to choose carefully such products, using a professional advice.

The majority of solvents and cleaners are intended for separate units, systems, knots or details and are effective only at observance of corresponding technology of their use. Therefore to spend clearing by them follows, or separating these units or details, or in certain sequence. At first clear fuel system, then – oil as products of clearing of fuel system can get to oil. However, some firms suggest engine clearing to spend simultaneously, using the newest solvents.

After fast (5–10 minutes) clearings of fuel and oil system on HUNDRED for maintenance of cleanliness of the engine, prevention of accumulation of various deposits it is possible to use special "долгодействующие" solvents which periodically add in fuel and oil. Such solvents are intended for resinous substances and do not dissolve varnishes, deposits. For engine maintenance in cleanliness follows a thicket, than it is defined in characteristics sheet on service of cars, to replace oil. It is especially important. An operating time synthetic and минирального oils equally. At use of synthetic oil the engine, as a rule, becomes soiled less.

Now concerning some additives to oils which as advertising assures, "reduce deterioration of the engine, raising capacity and profitability". It is a question about антиизносных additives and additives (modifiers of a friction and металлоплакирующих additives). The essence of their action consists that they get into microcracks, forming on a surface of metal a film protecting from deterioration. At mechanical deterioration backlashes increase, pressure in oil system falls, the compression in cylinders decreases, fuel and engine oil expenses grow.

"Salutary" properties of lubricants into which structure are entered высокодиспергированные additives, are known for a long time. Input of metal additives in engine oils can really raise копрессия in cylinders and pressure in oil system at the expense of reduction of backlashes, вследствии that expenses of fuel and oil on burning out go down. The friction modifier to which belongs, for example, дисульфид molybdenum, simultaneously reduces friction factor a little.

Antiiznosnye additives and additives to oils for the worn out engines can be used, but to choose them it is necessary attentively not to damage to the engine. Not забывйте that noisy advertising becomes for this purpose, чтобя to sell the goods, despite its quality.

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