View Full Version : royal purple
mustangrfast88
05-18-2007, 03:08 PM
ok who cares the stuff and what does it run. i got a 2000 ford expedition and i am thinking of changing the front diff, transmission , transfer case and rear diff. does anybody know if i still need the ford modifer for the front and rear diffs. and i run moble 1 sythatic in the engine should i change it over to royal purple or with it be ok to stay with moble 1. thank you
theyallslow
05-18-2007, 03:24 PM
i think the oil its like $5 a qt. at KOI so i bet it is fair in price for the diff, and trans.
RACEME
05-18-2007, 03:26 PM
I am pretty sure mr cincy speed guy stocks alot of it
5.0calypso93lx
05-18-2007, 03:26 PM
You don't need friction modifier when you run the RP stuff, as it already has it in it.
Mista Bone
05-18-2007, 03:57 PM
I'd stay with Mobil 1 in the motor, RP's oil doesn't last the mileage (breaksdown) that Mobil 1 does.
How my buddy explained it to me, he reads into this site alot
http://www.bobistheoilguy.com/
I am pretty sure mr cincy speed guy stocks alot of it
Cracker carries it.
821-2221
:bigthumb
mustangrfast88
05-19-2007, 02:54 AM
well when i go to do this i will get it from cincy speed then. craig can you give me a price of the stuff i will need
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