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      09-11-2012, 08:47 AM   #31
Sean05
Putcha ang ganda...
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Quote:
Originally Posted by jjw2331 View Post
Is there any significant difference other than the price between the two oils? For example, does the non-FM perform better vs the FM? Better protection? Better performance from the diff?
I would assume so... I read somewhere that when your diff starts making the noise BMW will use the FM fluid. I say why wait for that noise just use the FM... I have 72k miles on the car and never made a diff noise, and still opted for the FM fluid just for a piece of mind.

Quote:
Originally Posted by bigjae1976 View Post
I'm using the OE BMW fluid while under warranty.

Has anyone used redline or something else in the rear diff? I would imagine that the Redline 75w-140 would work fine.
Yes people have used the REDLINE... they dont have a diff fluid that comes with Friction Modifier but they do have an additive. not sure how much you need to mix it but i think its safer to just get the BMW FM fluid.
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