Alright, unfortunately I don't have an engine monitor. I tested the temp gauge with boiling water. It read about 220, so just a little high. It is well connected and seated in the oil filter adapter. On the last flight I had 7-1/4 qts of oil before and 6-3/4 qts after a 45 min local. Also, the oil cooler was at 150 degrees a couple minutes after shutdown.
The oil is fairly black after only about 3 hours since changing it and I would say it smells like exhaust. Also, the chrome cylinders read at least 25 degrees hotter than the steel after shutdown...I checked with a laser thermometer.
On the compression check, air was escaping from the oil dipstick tube notably for the chrome cylinders. The boroscope did not reveal anything but all the spark plugs get black and full of deposits fairly quickly.
Thanks for y'alls interest,
Will