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Old 04-24-2012, 03:34 AM
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TFT? how high is too high?

Hey guys, im just curious as what would be too high for trans fluid temp driving around town. my truck ( 2005 F350 SCLB 4x4 ) usually runs between 150 and 160 degrees. i have gearheads srl and i noticed as i was playing around through town a bit my TFT went as high as 170. does this seem ok or a little high? i have a trans cooler from another truck in my garage in perfect shape. it has 3/8 inlet/outlets, would this be ok to install or would the supply and return have to be bigger? the trans shifts good and fluid is clean but i want to check on this before it becomes an issue. thanks.
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Old 04-24-2012, 03:41 AM
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150-160 is just fine , in my opinion 170 isnt too high
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Old 04-24-2012, 06:20 AM
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2 High= 200-220*
At 170* just right.
2 stroker
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Old 04-24-2012, 06:22 AM
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Too high would be 230.

The tranny has a t-stat in it. Opens at 165*. The highest I have seen was during 95* outside temps, pulling my 8000# travel trailer up a 6% grade, 180*

Here is a good tranny thread:

TorqShift Transmission - Information and Troubleshooting - Ford Truck Enthusiasts Forums
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Old 04-24-2012, 06:26 AM
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Also, just want to mention that my analog tranny temp sender seems to be "off" compared to what I'm reading with my Edge Insight CS unit. The analog gauge is showing about 30*F warmer than what is showing on my CS...
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Old 04-24-2012, 06:37 AM
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I have seen 170 towing 10K with AC on in 100* temps when driving though the Appellations.

I was hauling like 80/85mph. Thinking about that first ice cold beer when I got to MD had the skinny pedal down low.
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Old 04-24-2012, 04:37 PM
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hey thanks for all the replys, there`s 175,000 miles on my tranny and just wanted to make sure things looked healthy. it seems to work spot on but it never hurts to ask. thanks again.
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