Posted for "Christopher Zavatson" <Christopher.Zavatson@udlp.com>:

Steve,
Have you checked the calibration of your oil temperature reading. Before making hardware changes make sure you know you are dealing with
good numbers.  My oil temp probe is a thermistor.  The indication
drifted over time at the high end of the scale.  A potentiometer in the
gauge easily took care of the drift.
If temps are real, then check the operation of the vernatherm.
Chris
N91CZ
360std