Trans fluid leak suspect cooler location problem.

[OrrieG]

Originally Posted by _Ogre

most oem trans coolers are higher than the trans as they are vertical in a cross flow radiator
basic hydraulic theory prevents siphoning as one side will be blocked by a valve or pump
unless you have an air leak you can have no air gap, fluid will push any air out of the lines

you didn't driver the truck other than in/out of the garage to bleed all the air out of valving and clutches
at this point i wouldn't worry about it

First time just in and out, the other day around the block a couple of time. Engine got up to operating temp, but trans only to about 120 degrees and was shifting fine. I will keep track of it and address later if I start having issues. Thanks for the reassurance.