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Yes, I didn't pay attention to my "smart" phones autocorrect, sorry about any confusion with the terms. Allison, does approve 40w for the non TCM transmissions(computer controlled), that being said, some industrial World type Allisons also allow for 40w.

It is rated with the correct friction modifiers, and at running temp hold nice on the clutches, but if you take off cold without running the tranny up to about 100 degrees to thin it out, it will allow premature wear. I am not saying don't use it, its just not recommended. Dextron and...

If I remember the tc holds about 8 quarts. If you wanted to get really crazy, find a mom and POP tranny shop, and have them do a fluid exchange. A little left in the tc won't hurt much, we never get it all when we do pm's. Let me pull my books in the morning, to see what Allison says is...

Ok, being an Allison tech and working on a couple A3's, dextron III or transyn is ok, using the napa hyd fluid not so good. If you drain down the pan, pull the return and feed line line from the cooler and with them not hooked to the trans, blow air in reverse direction thru the cooler lines...