transfer case fluid change

[jebruns]

New here. I looked for a search function, but could not find any such function. We just bought a 2011 QX86 as an extra vehicle. It's in great shape, but I'm going through it changing all the fluids. I want to do the transfer case, but am getting conflicting info on how much fluid to buy. I watched some YT vids, and saw 3-4 qts being added. But my local Infiniti dealer says less than 2. Being the dealer wants like $60 a qt, I don't want to overbuy. But I also want to have enough on hand to do the job. So asking for confirmation on the capacity from anyone who has done this work. The owners manual is silent on capacity for tranny, transfer case and differentials.

Thanks. I'm sure I'll have more questions as I go. Changing tranny and differential fluids also. Spark plugs, air filter, oil/filter, etc are all done or getting addressed. What else should I change out?

 

[primov8]

The t-case, when new and bone dry is approx. 1.5 qts. You'll end up refilling a bit less than 1.5 qts. Also, why overpay for t-case fluid from Nissan. They don't manufacture their own fluids and several options available whether online or at your local auto parts store. I used Ravenol TF-0870 for several years and on my last two t-case drain and fills, I opted for Redline MT-LV 70W/75W GL-4 because the local O'Reilly just happens to carry it in stock. When filling the t-case with new fluid, you'll need a full range scan tool to do the transfer fluid viscosity learning procedure.

 

[jebruns]

Thanks for the input. But I need a $500 tool to change the transfer case fluid? Do I need that if I use the Nissan fluid? I don't mind buying tools, but that seems like a lot of money just to be able to change t-case oil.

 

[primov8]

It has nothing to do with whatever type of fluid used. The reset is done in order to tell the TCM there is fresh, new fluid in the t-case and resets for new oil parameters/properties.
It’s possible a couple drain and fills may be sufficient but eventually, the discrepancy in the actual fluid properties vs. what the TCM thinks can become an issue.