Duffy or other Diff guys in the know

Big Cat Davo

Registered User
I am going to be running Redline 80w-140 in the rear end of the Cat, will I need the 4 oz of friction modifier in the rear when using the Redline synthetic oil?

Also how much fluid does the diff take?

Dave
 
Last edited:
I didnt put it in mine.

It says on the bottle that you don�ft need to. It has it already. I have heard from others that didn�ft put it in either. I don�ft think the Ford friction modifier is synthetic, so�c Is it a good idea to add it or not�c Im not sure, but you shouldn�ft need to add it.

Good luck
 
Back
Top