Engine Lubrication - BMW 1999-2005 M3 Service Manual

Lubrication System
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Engine lubrication

Oil pressure is generated by a
gear-type pump bolted to the bottom of
the engine block. The oil pump is chain
driven off the front of the crankshaft.
Oil passages in the cylinder block and
cylinder head connect the oil pump to
components such as camshafts,
crankshaft and valve lifters.
Engine oil capacity (includes filter
replacement)
Rear wheel drive
All wheel drive
Troubleshooting
The oil pressure warning system
consists of an oil pressure switch
mounted in the oil circuit and an
instrument panel warning light. Other
safety features include:
Oil level warning system
A filter bypass to provide
lubrication should the oil filter
become clogged
An oil pump pressure relief valve
to prevent excessive system
pressure
CAUTION!
If the red oil pressure warning light
comes on or flashes on while
driving, always assume that the oil
pressure is low.
6.5 liters (6.9 qt.)
7.5 liters (7.9 qt.)
2/25/2009 9:52 PM