Does anyone know what oil Ford uses for the Mustangs? I'm considering switching over to Royal Purple, but I'm not very sure which type to get.

 

I'm A Performance Engine Builder And Royle Purple Is The Only Oil I Recommend Using To My Customers. I Have Been Running It In My 05 Since The First Oil Change. Just Once You Use It Don't Go Back To A Mineral Based Oil, Bearing Damage Can Occur.

 

A couple of months ago I was watching one of those car shows on Spike on Saturday where they did a dyno test on a 4X4, first using the regular lubricants, then a second dyno run after switching everything (differentials, transfer case, trans, engine) to Royal Purple. If memory serves, they got about 10 RWHP more with the RP due to friction reduction. Sounds like great stuff!

 

I have a question... for those of you using the royal purple, which grade are u using? like 5w20 or which 1 would u recommend and why... does the filter matter?

And while we're on the subject... I have always been curious as to when to change out the tranny fluid. what kind of schedule does tranny fluid go..

I have the 5 speed btw.

thank u in advance,
tom