I have noticed a difference but I am still to get into some heavy mud or something. 2wd drive mostly I really noticed a difference, at Pismo sand dunes, It was great!
I had mine installed by my mechaninc (he loves me!!!$$$) I had to have a carrier change since I went with the Detroit Locker.
When we get some good rain I will be able to tell I am sure!
FXF
Never late for a Tee time or wheelin with my buddies! Always ready for both!!!