Impressed with Maxlife ATF

The fluid change by itself is likely what made the difference. Unless you're using a high-grade, synthetic "Dex3" I can't imagine there would be any significant, fictional difference between a Dex6 / Dex3 / Maxlife fluid.

Changing the fluid before wear / contamination increases is always a good idea.
Transfer cases in question both owned by me since new. Both get 30 K OCI. Both using Matic D, a dex3 Based fluid according to this website, worked fine for a decade plus. Changing from Matic D to Max life caused shifting difficulties in both, and almost immediately. Switching back to a Transmax dex3 based product reversed the issues almost immediately in both cases.

Possibly it has nothing to do with viscosity, but it also has nothing to do with wear. Simple solution in my case, I poured the remaining Transmax into the recycle container at my recycling center. Problem solved.

In my very specific instances, this product did not work in an application for which the specifications seem to imply it should. Both cases continue to function as they should with different fluid. One is almost at 30 K again with no issues, and I’ll change it out shortly using a dex3 type product.
 
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Your results are puzzling as I can't imagine what is in the transfer case that would be finicky with fluid. I'm guessing it's just gears, chain, shafts and bearings. Maxlife should work as good as any (better than most in my experience).
 
Your results are puzzling as I can't imagine what is in the transfer case that would be finicky with fluid. I'm guessing it's just gears, chain, shafts and bearings. Maxlife should work as good as any (better than most in my experience).
I agree with you on that, which is why I poured it in there. Also, like you, I would’ve attributed it to the transfer case getting old, except when it happened to both, and in pretty short order, I was suspicious. And when it was reversed in one and then reversed in the other by changing the fluid again??

So whatever the case in this very specific application, seems to be not a good fit.
 
Yes, many here report ML works well for WS and I've used it in a couple 2nd Gen Tundras with good results (which also call for WS)
Already bought 2 gallons. How do you recommend doing the change. Drain and fill or flush?
 
Already bought 2 gallons. How do you recommend doing the change. Drain and fill or flush?


Is there a removable drain pan? If so you want to drop the pan, clean it up (and the magnets), inspect / replace the filter, assemble and refill.

Depending how bad it is you might want to drain & fill one or two more times (no pan drop).

Do you have service manual / instructions?
 
Is there a removable drain pan? If so you want to drop the pan, clean it up (and the magnets), inspect / replace the filter, assemble and refill.

Depending how bad it is you might want to drain & fill one or two more times (no pan drop).

Do you have service manual / instructions?
Yes there is removable pan.
No i just let the mechanic do it
 
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