[jrvariel48]

Originally Posted by Ziggster

FWIW, everything else being equal, and if my memory serves me correctly, you can simply extrapolate coolant temps at different ambient temps based on the difference between the ambient temp you wish to theorize about. For example, if you have a coolant temp of 205F at 80F ambient, and want to know what the coolant temp would be at 100F (under the exact same operating conditions), you would simply add the difference between the two ambient temps to the coolant temp. So, under the same conditions, at 100F ambient, the coolant temp would be 225F. At least that is how we used to calculate coolant temps at higher than available ambient temps.

That sounds right to me Ziggster
Thanks Joe