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Dennis have you changed filters and replaced fluid with new transynd? If not that would be my first move.

I typically would trust a digital input but since you asked where the sensor was located I might infer you don’t trust the sensor. Easy enough to shoot the upper inlet pipe to the cooler with an IR gun to cross check

I have not changed the fluid or filters yet.  It's on my short list.

Recently changed my fluid and filters and dropped 7 degrees.