Short-term use of CCMC-G4, CCMC-G5 or API-SH, API-SH/CD or API-SH/CE oils is allowed, according to the system «API» (American Petroleum Institute) accepted in the USA. European Commission SSMS has been replaced by «ASEA» (Association des Constructeurs Europeems die I’Automobile). The car manufacturer has set its own standards for oil use, therefore, for reliable engine operation, it is necessary to use ACEA quality oils.
Attention! firm «BMW-AG» it is not allowed to introduce additional additives of any kind into fuels and oils intended for the engines of their cars.
The main components of the lubrication system are shown in fig. 3.16.
1 - replaceable element; 2 - ring (7,0x2,5); 3 - ring (91x4); 4 - filter cover; 5 - sealing gasket; 6 - oil pipeline; 7 - sealing ring (А14х20); 8 - hollow bolt; 9 - bolt (M8x100); 10 - oil temperature sensor; 11 - oil pressure sensor; 12 - bolt (M8x55); 13 - bolt (148x70); 14 - ring (20x3); 15 - suction pipeline; 16 - bolt (M6x16); 17.45 - bolt (М8x55); 18 - oil pump; 19 - bushing; 20 - probe; 21 - ring (9x2.2); 22 - bracket; 23, 25, 27, 28, 34 - bolt; 24 - guide; 26 - ring (19,5x3); 29 - oil pan; 30 - pin (M6x30); 31, 35 - sealing ring; 32-oil level sensor; 33 - nut (M6); 36 - cork (M12x1.5); 37 - sealing gasket; 38 - mounting ring; 39 - nut (М10x1); 40 - asterisk; 41 - inner rotor; 42 - outer rotor; 43 - chain; 44 - control valve; 46 - spring; 47 - ring (17x1,8); 48 - spacer sleeve; 49 - retaining ring (2x1); 50 - branch pipe of the oil separator hose; 51 - oil filter housing
On car models, an oil control system is used, which includes pressure, temperature and oil level, depending on the engine speed (loads). The oil pressure at idle on a warm engine must be at least 0.5 kgf / cm2. If the crankshaft speed is higher than or equal to the idle speed, and the pressure is lower than 0.5 kgf / cm2, the emergency oil pressure indicator flashes on the instrument panel. When the engine shaft speed is about 5000-6000 min-1, the oil pressure should be within 4.0-4.2 kgf / cm2.
The main reasons for the blinking indicator can be:
- low oil level:
- malfunction of pressure sensors;
- malfunction of temperature sensors;
- malfunction of level sensors;
- malfunction of the oil pump drive;
- oil pump malfunction;
- increased wear of the crankshaft bearings.
Engine lubrication capacity (including 0.5 l in oil filter) - 7.5 liters. Oil is poured into the engine oil pan through the plug on the cylinder head cover.