Engine Oil Viscosity Chart In Relation To Ambient Temperature; Determining Engine Oil Consumption - BMW K75 Repair Manual

Engine oil viscosity chart
in relation to ambient temperature
SA E 20
i
I
SAE3 0
I
~: ------~~~I------~ S 7 A = E ~ 4~ 0-
I
I I I I
- 3 0 -20 -1 0 0 10 20 3 0 40 50 °
C
e
i l
I I I I I I I )
- I
I
I I I I I
I
l -
I
20 40 60 80 10 0 120 °
F
I
I
SAE 20 W 50
S AE 20 W 40
S AE 15 W 50
SA E 15 W 40
S AE 10 W 50
S AE 10 W 40
I
S AE 10 W 3 0
The SAE class temperature limits may be exceeded or undercut briefly.
Applicable to:
Brand HO oil for spark ignition engines, API classifications SE/CC and SF/CC
Determining engine oil consumption
Oil consumption can be measured after app. 7500 km.
The motorcycle has to travel around this distance before oil consumption stabilises.
The engine must be free from leaks.
Drain offthe engine oil with the engine at operating temperature.
Renew the filter element.
Add fresh oil to the engine.
Ride the motorcycle in normal conditions until the oillevel has fallen to the lower mark on the inspection win-
dow. (Difference between MIN and MAX mark
=
0.60 I, determine oil consumption by volumetrie measure-
ment if appropriate.)
Measurements taken over a short distance are always imprecise, as the first half litre is always used up more
rapidly.
Maximum permissible oil consumption rate:
0.151
per
1 00
km.
Possible causes of excessive oil consumption:
1. The running-in process is not yet complete.
2. Valve guides leaking.
3. Piston seizure.
4. Piston rings incorrectly installed, broken or worn .
5. Operating clearance between valve stem and valve guides excessive, valve stern seal faulty.
00-30.0
8.87