So no one knows why that trans runs hot? What is hot? Why would Toyota allow it to run hot when they know heat is what kills an auto? I’m seriously interested in the answer.
Extended periods in 3rd gear will bring the temps to between 275 and 300.
Cruising with the converter locked up runs around 160
This is all based on posts here.
A good valve body that allows 3rd gear lock up and adding a trans cooler helps. The diesels with the hydro a442f only use the radiator and have no other means of cooling.
Why does Toyota allow this? **** if I know man.
So to answer your questions
Convert stall speed and slippage coupled with a lack of cooling is why it's hot.
Hot is 275-300
I don't know.