I am new to the 912ULS. Even with my oil cooler partially blocked off, my engine's oil temperature readings seem surprisingly low (like 140-160 F). My CHT’s are in the normal range. This leads me to doubt the accuracy of the oil temperature gauge. I would like to remove the probe from the engine and place it in a known temperature (boiling water) to check the accuracy of my oil temperature gauge. I would block the hole with a 10X1.5 bolt while doing the check. Would I need to do an oil system purge if I open up the oil system in this manner?
