Transfer case fluid

[Chereau]

I know u guys have talked about this a million times.. 08 h3 alpha. Whats recomended???

 

[Bruces]

I have an 07 adventure so there may be differences but I was told dex6. Takes almost two quarts.

 

[Ghostbuster]

 

[Ghostbuster]

I think there were only two types of t cases ever used on the H3.

 

[4speedfunk]

Yeah, it has been done to death. Most people use Dex VI but GM recommends several fluids depending on model year. Since they only list part numbers for the fluids, it's very difficult to get the straight answer on exactly what each fluid is. Some might be Dex IV. Some might be manual stick shift fluid. Some might be a special full-time t-case fluid. We'll never know.
Long story short...Dex VI seems to supersede all of these fluids, and my guess is it's safe to use it. Clearly the BW full-time case has issues with fluid life, so change early and change often...regardless of the fluid type. Keeping the fluid fresh seems to be far more critical than the type used.

 

[08H3]

I finally went to the dealer and had the service department pull up the info on the screen. I gave them my VIN, asked them to pretend that I just brought it in and wanted the fluid changed. Now tell me what GM says to put back in. Service info definitively said Dex VI.

 

[cgalpha08]

IIRC, I just had a shop change mine along with a bunch of other fluids that I didn't feel like doing in my apt complex parking lot. On the work order it states they used full synthetic manual transmission fluid. But as 4 seed states I think this changes between model years along with whatever the brand at GM were feeling would be a wise choice haha

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[Ghostbuster]

Well I'm gonna take 4Speed's advice and change it early and often. Just changed it out with Vavoline Dex VI. That was about a 20k miles interval on that fluid change.