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Chris_32212 · 10-18-2008

i am curious if anyone uses royal purple in the motor. swapping to synthetic trans and diff fluid can net some hp and i am just curious if anyone has done it. the GM part number for our trans fluid cross references to Royal Purple 5w30 XPR fluid (Extreme Performance Race). they also have a comperable synthetic gear oil. i talked to Bill B. and he said he didn't reccomend royal purple in the ZF trans simply because he doesn't have any experience with it. he gave me a part number for a german made trans fluid that is only available at BMW dealerships and he raves about how good it is but i am curious if it provides the HP gain that royal purple probably does. i know we are only talking a mabey a few hp for just the trans fluid but hey, every little bit helps right? let me know your thoughts on this.

Chris

10-18-2008	#1
Chris_32212 Join Date: Sep 2008 Location: Vancouver Posts: 224	Is anyone using Royal Purple? i am curious if anyone uses royal purple in the motor. swapping to synthetic trans and diff fluid can net some hp and i am just curious if anyone has done it. the GM part number for our trans fluid cross references to Royal Purple 5w30 XPR fluid (Extreme Performance Race). they also have a comperable synthetic gear oil. i talked to Bill B. and he said he didn't reccomend royal purple in the ZF trans simply because he doesn't have any experience with it. he gave me a part number for a german made trans fluid that is only available at BMW dealerships and he raves about how good it is but i am curious if it provides the HP gain that royal purple probably does. i know we are only talking a mabey a few hp for just the trans fluid but hey, every little bit helps right? let me know your thoughts on this. Chris Last edited by Chris_32212; 10-18-2008 at 08:36 PM.