Trans Gear Backlash Noise

[Duane <drcollie@xxxxxxxxxxxxxxx>]

>My 1988 325is makes a rattling sound from the transmission when it is in
>neutral.  It is clearly audible at idle at 600 RPM.  Any higher and it
>either goes away or is drowned out by the engine noise. 
>
>One mechanic I took it to says it is normal backlash noise.  This sounds
>reasonable to me.

True - especially as the car ages.  I used to have this in my '90 535i.
Playing around with different trans fluid weights solved it. I recall using
Redline in there, not sure which weight it was.

Duane Collie 

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