I'm doing the routine fluid swaps in everything on the truck. Engine Tranny and Diff. I figured while I was in there I would swap the t-case fluid since I havn't changed it since I had the truck so who knows whats in there and how long its been in there for.

The book says to use DexronIII automatic fluid. Some websites say ATF+3. I am putting ATF+4 Syn in the tranny and I was wondering if I could do the same for the t-case. Or what fluid you guys use.

 

I am by no means an expert but I did my trans and transfer case about 2 years ago with Dexron III and both have been fine.

I drive mostly city and highway.

I only use 4WD in the snow... so not that often.

I do not take my truck off-road very much at all and am pretty gentle if i do.

 

i will find out for you when i go to work today..

 

ATF+3/+4...bascially whatever you put in your transmission

I miss the days when you could fill them with motor oil [>:]

 

I used ATF3 and its been probably a year. No problems!

If you have extra ATF4 its not gonna hurt anything

 

I've got dextron III in mine for now, pulling a 25' camper with no problems. Going to put the royal purple in it at the next change.

 

Thats what I am going to use is the extra ATF4 Syn that I bought.

One observation on the synthetics, good lord to they SMELL!! Changing the tranny fluid yesterday, that stuff straight reeked to high heaven