2007 Expy Rear Differential Friction Modifier?

dgruhlke · #1 (**permalink**) 04-30-2012, 09:11 PM

Hello-
I just changed the rear differential fluid in my 2007 Expedition. From what I can tell the 2007s and newer do NOT have limited slip differentials, they have traction control. When the truck is jacked up and I spin a tire one way, the opposite tire spins the other way. Per the manual, the friction modifier is only needed on models with the limited slip. This is a bit confusing since it's not offered I don't know why they put that in the manual... but my question is am I right about this that I don't need the friction modifier?

Thanks!

critterf1 · #2 (**permalink**) 04-30-2012, 09:35 PM

Should not be needed.

berry1234 · #3 (**permalink**) 05-01-2012, 10:23 AM

Whats the manual say? If it says add it I would.

Tylus · #4 (**permalink**) 05-01-2012, 11:22 AM

No LS in the 07+ Expy

Just put the spec'd dif fluid. No modifier needed