Had my transmission flushed this morning so it would be good to go for this summer camping season (lots of towing and hauling). The tech said it kinda had a yellowish tint to it that he had never seen before. He thought there had been some type of addative added to it, but there hasn't that I know of. Last time I had my transmission flushed was when it was rebuilt about 1yr 8mths/16,000 miles ago. Only thing that has been done since the last flush was the install of an auxillary transmission cooler and temp sending unit.

Any ideas why it would be colored like that?

 

Did you see this and what is the techs level of exper?

I would take a white towel and be checking the dipstick randomly. I've never seen yellow transfluid. I have made some frothy fluid when I got some water in there.