So I changed my transmission fluid today. I drove around for 20 mins and my transmission temp got up to 135F with no towing. I let it sit in my driveway for 20 minutes more and it got up to 154F. I really don't got any temperature to compare to. I think it is usually around 160/170F before the adding the cooler. The true test is this Thursday when I go camping with my travel trailer.