RE: E30 differential

["Fadeev, Alex" <alex.fadeev@xxxxxxxxxxx>]

b r [mailto:flybarons@domain.elided] wrote:
> 
> All:
> I have an e30 325i with a 5spd. 

LSD or not?
How many miles?

> My differential is quite until I reach about 10mph and then
> I hear a growl that does not get too much louder with speed. 

Does it growl during sharp (wheel lock) turns?

> I have changed the diff fluid 

What fluid?
LSD or not (compatible with your diff or not)?
What weight?

> and wonder if I need the BMW stuff or am I experiencing a 
> worn out ring/pinion or bearing. I was thinking possible 
> ring/pinion since I have no noise until I reach about 10mph. 
> Bentley says it could be other causes. How do I check this 
> out without pulling the pumpkin cover.

Generally, all diffs get noisy with age. You can quiet them down a bit with
higher viscosity fluid or LSD additives for LSD diffs.

alex f

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