Change differential fluid???

[drdoom]

Sorry Nic, I should have been specific, but I have been putting in the green bottle for MercV applications. I have heard good things about the Dr. Tranny in the 4R70W though!

 

[SoNic67]

Ah, I see. I used the Motorcraft friction modifier XL-3 in my 4R70W, before I read about LubeGuard products. I added Dr. Tranny in my Huyndai Sonata transmission.