What temperature should be transmission fluid run at?

Asked by May 12, 2018 at 02:02 PM about the 2006 Pontiac GTO

Question type: Maintenance & Repair

The dummy dial is telling me that the car is running hot

2 Answers


The colder the better, but not much more than 200 degrees and thats pushing it. I have installed tranny coolers that bypass the one in the radiator and those run as cool as 140 degrees even under load, of course external temps make a difference but still they run much cooler and the failure rate is greatly reduced.


180 or lower is ideal.

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