Hi Dave.  Be there done that..:-)
I would start it cold and get to the runway before 135*.  Take off and
reduce power asap. Then make the decision to stay in the pattern for a quick
return or press on to greater things.
Of course, you and I both must fix the basic problems associated with a
cooling system that does not do the job as well as it should..
Regards
Tommy James(trying to get auto parts out of MMTO)

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