Yesterday I went out in my 1996 Z3 1.9 for the first proper drive in a couple of years and noticed a whirring humming noise coming from the rear end but only while the roof is up.
The old girl is a low mileage example and isn’t thrashed but wondered if it could be differential related.
I had the fluid changed about 3 years ago and wondered if anyone else has had a similar problem and should I change it again myself and if I need to then had anyone got any recommendations on which fluid is best and is it worth putting some molyslip in with the fluid.
The old girl is a low mileage example and isn’t thrashed but wondered if it could be differential related.
I had the fluid changed about 3 years ago and wondered if anyone else has had a similar problem and should I change it again myself and if I need to then had anyone got any recommendations on which fluid is best and is it worth putting some molyslip in with the fluid.