link for non FM rear diff fluid part?

[TX]

Originally Posted by jawwadh

Is the MB stuff with the friction modulator, or not as suggested earlier in this thread?/

It is not the FM booster BMW is using now. It's the stuff the car shipped off the line with - Castrol Syntrax as listed above in the posts. It's a fraction of the cost of the FM booster bottles from BMW. But if you need the FM booster then you need to buy the new stuff.