Best diff fluid to use

[2012GT/CS]

So would adding the bottle of friction modifier (with the RP fluid) anyways, hurt anything? :shrug:

I have the RP max 75w140 and I bought a bottle of motorcraft 4oz FM should I use half the bottle with the 75w140?

 

[Jimmysidecarr]

So would adding the bottle of friction modifier (with the RP fluid) anyways, hurt anything? :shrug:

No, but the LSD-FM reduces the effectiveness of the limited slip clutches so an over dose is not desirable. Just do the 8 to 10 figure eights and see if it shudders after that.

Add only if you need to reduce a shudder condition.

I have the RP max 75w140 and I bought a bottle of motorcraft 4oz FM should I use half the bottle with the 75w140?

No, Just do the 8 to 10 figure eights and see if it shudders after that.

Add only if you need to reduce a shudder condition.

LSD friction modifier reduces limited slip clutch grip.