Can Synthetic ATF be a substitute for GM Automatic Transfer Case Fluid?

[TurboDiverArt]

Art,

Been a year and a half since your repair. Still holding? I hope so. as I may be looking for a similar leak.

HammerWerf

Yup, still holding. Each time I change the oil I take a peek at the glob of JB Weld and it's still not leaking. I'm very pleased to say the least!

Art.

[TurboDiverArt]

The NP 246 AutoTrac is a good stout unit not suffering the issues of wear through other t-cases have had.

However, when my NP 246 had to be replaced it was because of a tow truck operator who swore he knew what he was doing, "he didn't", when he had to pay for the t-case replacement then he really knew! Towed the truck w/o placing the t-case in neutral which quickly damaged unit. Factory NP engineers were the ones to report to me that a good synthetic fluid is good to use in the NP-246, so far, so good.

I'd like to get a report too.

I remember reading in the owner’s manual when I got the truck about needing to put it in neutral before towing. I always wondered if it was BS, now I know it is indeed true!

Art.