Good post from Gmas, and the arguments for partial refueling with jet fuel sound persuasive. One point I want to make is that in a standard Skymaster, without after-market engine monitoring instruments, the EGT guage isn't very informative. If you look, you will notice that there is no scale; it says 25 deg/div, so you can use it lo lean in cruise, but it doesn't tell you actual EGT. And although you might remember where it typically is, a lower reading can easily be attributed to the lower outside temperature.
Ernie
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