2007 f150 running hot
2007 f150 5.4 changed radiator fan clutch and thermostat
also trans flush and new screen engine will run 196-206
trans will run 175 -200 or hotter what could be the culprit
Those temperatures are really not that high. You could install an aftermarket transmission cooler to lower the ATF temps. A cooling system service would not hurt but probably will not lower operating temperature much if any. Try Water Wetter in the radiator.
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