Hi, after reading many threads on slight diff noise it seems many Z3s make a slight noise.
I get a very slight noise at 75mph + only with the top up.
So iv stripped the boot out and added Silent Coat 2 stage insulation. Also changed the oil in the differential to Red Line 75w-90 fully synthetic oil from Opie oils. The slight noise ( which the wife couldn't here) has now gone completely....result.
Howard
I get a very slight noise at 75mph + only with the top up.
So iv stripped the boot out and added Silent Coat 2 stage insulation. Also changed the oil in the differential to Red Line 75w-90 fully synthetic oil from Opie oils. The slight noise ( which the wife couldn't here) has now gone completely....result.
Howard
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