I would not run ATF in a Dmax. Just run a good additive. Plenty of good info on www.dieselplace.com Make sure to drain and refill both diffs. If they have never been done, they are most likely low. GM is notorious for underfilling them. Also make sure to change the external, spin-on tranny filter often. Here's a couple great places to get parts and service items for these trucks:
www.kennedydiesel.com
www.merchant-automotive.com
Stanadyne and Pimrose is what I used to use for additives. Power Service is readily available but not as good a quality an additive.
www.kennedydiesel.com
www.merchant-automotive.com
Stanadyne and Pimrose is what I used to use for additives. Power Service is readily available but not as good a quality an additive.
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