[meanfarmer]

What is the operating temperature range for the 5 speed automatic in the 2005 excursion with a 6.0! Thanks

 

[ex mounty]

Typical "running around" unloaded and not towing you may get as high as 165°F. The highest I have seen while towing is 185°F. You want to keep this below 200°F to lengthen the life of your trans.

 

[Band_Member]

I was hauling about 500 Lbs. of payload (groceries, LOL) in the bed yesterday on the Expressway at 75 MPH and my transmission fluid temp was running 160° max.

 

[Mark Kovalsky]

You want to keep this below 200°F to lengthen the life of your trans.

There is no reason that you should keep it below 200°F. Ford's long term upper limit is 220°F, with a short term limit of 250°F. Nothing magical happens at 200°F.

 

[ex mounty]

There is no reason that you should keep it below 200°F. Ford's long term upper limit is 220°F, with a short term limit of 250°F. Nothing magical happens at 200°F.

Thank you for the clarification, I'm still a newbie and learning more every day.
I will make note of that in one of my threads.