XL3 friction modifier for rear diff - PP?

[Competition Orange]

The manual and Ford recommend XL3 friction modifier for the rear diff.

Why would you need it in the PP Torsen?

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[sloppymax]

It is in the factory fill for the Torsen for NVH reduction. Saw this from a guy on the forums that works for Torsen. Seems like most with the Torsen get enough friction modifier from whatever brand they go with unless you go with the Ford fluid.

 

[Competition Orange]

It is in the factory fill for the Torsen for NVH reduction. Saw this from a guy on the forums that works for Torsen. Seems like most with the Torsen get enough friction modifier from whatever brand they go with unless you go with the Ford fluid.

Stupidly I purchased the factory ford fluid, and the modifier.

Do you have the info from the Torsen guy available?

 

[Competition Orange]

I've done a bunch of online research and talked with a bunch of car guys and its the consensus that I should NOT put the XL3 friction modifier in the Torsen diff.

Dino or synthetic fluid is fine, of the factory specs (75w85).

If anyone has anything contradictory, post it up.

 

[sloppymax]

Here it is. I do not have a PP, so I am planning on use FM for my clutches obviously. I just took note when he said it was a factory fill item and he worked for them.

http://www.mustang6g.com/forums/showthread.php?t=29569&highlight=torsen

 

[Competition Orange]

Much appreciated. Seems that the modifier is only needed if the diff starts making noise. Thanks.

 

[ForTehNguyen]

Mobil 1 LS gear oil has a friction modifier already

 

[Bahndvr]

Doesn't FM cause the rear end to run hotter?

 

[daltron]

I put RP in mine, zero additive.

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