Situation: When a shock absorber is faulty on one side (leaking, noises, limit values exceeded on the shock tester), often both shock absorbers on the axle in question are replaced.
Effect: This is not necessary for technical reasons and causes the manufacturer not to recognize the unnecessarily removed shock absorbers as defective parts. Unnecessarily high costs for the customer can be avoided by replacing the shock absorber on one side only.
Procedure: If one shock absorber is damaged, it is only necessary to replace both shock absorbers when the car has driven in excess of 80 000 km.
Exception: On all M-GmbH models, when a limit value is exceeded on one side, it is still necessary always to replace both shock absorbers on the relevant axle.
BMW X3 Service & Repair Manual > Suspension: Final drive oil for bmw m1 motorsport coupe
3.0 FINAL DRIVE OIL FOR BMW M1 MOTORSPORT COUPE
The final drive of a BMW M1 is integrated into the manual transmission and the oil supply is accomplished
with a mutual oil filling.
Use reputable brand SAE 80 manual transmission oil conforming with specifications MIL-L-2105 A or API-
GL 4.
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