My work just bought a nice used 2001 Isuzu NPR NF2 cabover with the 4cyl diesel and 4speed Aisin auto. Nice truck! I like driving it. It runs out and drives like a car!!

Anyhow...I want to do a full fluid change on everything. Anyone know what type of trans fluid this Aisin takes? I can't really find any good info on the net. I hope its not a special Aisin $40/gallon ATF. The trans model is A450-43LE.

Isuzu GMC dealer in Indy said a 2001 NPR NF2 Aisin equipped truck would use Dexron III. And the coolant looks like Dexcool...kinda dark orange looking now. Need to flush that too.