I have a 2006 Pontiac grand prix with the 3.8 N/A version. I changed the trans fluid around 70k along with a new filter it has 104k on it now. My trans will run around 160-170 degrees when the temps outside are around 40 degrees. In the summer time when I'm driving to work (50 miles one way) the trans will sometimes reach 202 and 204 degrees. Most of my driving is at 70 mph it shifts fine and runs good. Is this normal?
Do I need to install a trans cooler? Is so what brand and where do I need to tap it in?