Quote:
Originally Posted by Sean05
mine never made noise but still opted out for the friction modifier which is a lot compare to the regular..
ALSO FYI if you guys are interested on 15 bucks a bottle contact MERC... they have it without the Friction Modifier for less than half a bottle compare to BMW...
Here you go...
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Good heads up. It might be an even better deal than you first thought. It's my understanding that the "limted slip" labeling on the Castrol 75w-140 (and most other brands') bottles is an indicator of a friction modifier that has been added to the differential fluid. In this case, the wording on the
Castrol website spec sheet for their Limited Slip 75w-140 hints that it has a friction modifier in it:
"Advantages - Reduces noise and vibrations in the axle."