Quote:
Originally Posted by RiceEatingZR1
any one ever use Royal Purple in their trans?
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After having a "blue tag" ZF freeze up on me while cruising the interstate, and opting to buy a new one instead of trying to fix the old one, Bill Boudreau @ ZFdoc.com recommended the Castrol TWS 10W-60 synthetic (available at BMW dealerships). I suppose anything equivelant would suffice, RP or whatever.
FWIW,
P.