Thanks for all the responses and help!
This am, the upper tank was missing more fluid
.... I put in 50/50... about 3/4 gal ... There was no fluid on the ground ... I drove to work temp actually went down from the past couple wks from mid level temp to the notch before.... so fluid must've been missing for that time but not enough to trip the warning light... what an idiot
....
My drive to work was 20 miles, highway speed... so not stop and go... and not a drop missing ARGGHH... Let's see when I get home.... I definiely need to check the tranny fluid and go from there in checking what can be happening....