I change to red line at 15000 in the trany, tranfer, and front and back pumkins, just wondering when I should do it again. Thanks for your opinions
"D"

 

I did all of them the first time around 18k, and the second time around 40k. I did the tranny and xfer case both times since I was already under the truck doing the work anyways.

 

i did the axles at 15k. the trans at 5k, cause i put the genos filter kit on.

at 30k i will do both axles, trans, tcase, and put on fast coolers, and maghytech diff covers.

 

All the fluids you changed were synthetic to begin with, so the maintenance schedule wouldn't change from what it states in the owners manual.

Axles -15k
Transmission -25k
Transfer Case - ?

With that said, I just changed the fluid in my axles yesterday. the front had 45k on it, and the back had 30k on it. It looked very clean, so I am definitely extending the intervals there. I will probably not do them again until next fall at around 90k. I don't tow very much at all so the axles are rarely stressed or heated.

The transmission does get done twice a year, about every 22-25k miles.