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Yes, sorry, I should have specified model, etc. Here're some answers and info:
1 - 1967 T337B.
2 - Gage might in fact be bad - don't know that yet. Given that you could get the temp. reading to change after landing by wiggling the center lead element on the sender led me to suspect the sender unit ("probe" as I believe parts manual calls it).
3 - Temp. Starts at bottom of scale when you turn on master, went higher upon climb, then leveled off and diminished some when I turned around and landed.
4 - Where is it reding? Well I only have two marks - 180 degrees and the read mark at the top of the gage. It was reading halfway between 180 and red mark when I stopped climbing and turned around to come back to the airport.
(I also suspected the sender since nothing else seemed to confirm the high oil temp reading I got and when I landed the first time it started reading high and switched the connectors at the back of the gages it immediately read lower; that was a month or more ago.)
I have switched the wires on the two gages for the next flight to see what it reads. If that doesn't reveal anything I will try reversing the two probes and see if that makes a diff.
If it still reads high after the next flight I might stat checking the oil cooler stuff. I didn't know about the valve that regulates cooling through the cooler that Bob mentioned, so that might be something to check out early on, too.
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