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Lehanover@aol.com wrote:
The oil temperature gage reports the temperature of the oil that is flowing around the sensor bulb. This is spent oil that has returned to the pan from the pressure relief valve, the bearing spill and rotor cooling.
Actually, most of us (flying) measure the oil temp after the cooler where it enters the engine.
I also have an oil pan temp sensor.
In the power range I operate at (150 -120 HP estimated), I typically see a difference of 20C between the two temps. Since I got two good water radiators, I seldom see oil input temps above 93C (200F) even on a hot day and continuous climb. My oil cooler inlet is about 1.5" x 4", so there is room for improvement.
Finn
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