As the title said im thinking about switching over to a synthetic gear lube in my Borg-Warner 4481-NR3 Transfer Case. WHY? Well since its a planetary gear style AWD case with Zero parts requiring friction/clutches and having my last case die on me cause a 35$ bushing wore out.

So whats the general consensous about me doing this? To be honest having ATF fluid as its only source of lube for a complex gear/chain system just seems too thin especially at higher temps.

Well i've said my piece and i'll let the rest of the boards fill in the space.

Thanks,
Mike

 

If DextronIII ATF is what supposed to be in there, DO NOT change to 75W90

ATF is in there for a reason.

 

Well i probably shouldnt have said 75W90... but i was changing the fluid in the rear-end at the time i posted so it was on the brain lol.

I did end up changing what is the the T-Case but instead of 75w90 which even i know is way too thick for that. I ended up filling it with 50% ATF and 50% Lucas Synthetic Oil Stabilizer and im just gonna see how things run.

First Impressions after a few mile drive, its quieter thats for sure and got rid of a lot of the "drive to reverse" clunk. So im happy.

 

Are you still running this set up? (the half Lucas oil stabilizer and half trans fluid)