For the uninitiated, an oil temperature probe is required keep a check on the oil temperature. The oil temperature is vital to maintain its viscosity. A low temperature will make the oil useless whereas a higher than normal temperature will risk a whole lot more than just engine damage.

An oil temperature sensor is inserted into the aircraft engine (please see latter part of this article on how to install the oil temperature probe), and the wires are connected to the oil temperature indicator or EDM if your aircraft cockpit sports an EDM. If the EDM permits it, the pilot can pre-set an alarm for the oil temperature so an audio-visual alarm sounds ... Read more »