Attention! It is not permitted to introduce additional additives of any kind into fuels and oils intended by BMW-AG for its cars.
The car models are equipped with an oil pressure control system that monitors the oil pressure depending on the engine crankshaft speed. The oil pressure at idle speed with the engine warmed up should 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 oil pressure warning signal flashes on the instrument panel. At maximum engine speed, 5000 – 6000 min⁻¹, the oil pressure should be within 4.0 – 4.7 kgf/cm².
The oil pressure sensor is always installed with a new gasket and tightened to a torque of 20 N·m (2.0 kgf·m). Additionally, on the "N62B48" engine, an oil level sensor is installed in the oil pan.
The main reasons for the indicator to blink may be:
- low oil level;
- pressure sensor failure;
- oil pump drive failure;
- oil pump failure;
- increased wear of crankshaft bearings.
Oil is poured into the engine oil pan through the plug on the cylinder head cover. Engine lubrication system capacity (including 0.5 l in the oil filter) – 8.0 l.