Q: I have a 1998 Maule with an O-360 engine. I have the original needle oil temperature gauge, as well as a JPI-730 engine analyzer, and they both read the same temperature during all phases of flight.
My annual was completed a few days ago and the first thing I noticed was that the original oil temperature needle would initially fluctuate (never happened before) and then settle down, and when airborne it was at least 45° higher than the JPI-730.
I brought the plane back to the IA and he tightened the probe connection on the engine, but the temperature split is the same. Is the original oil temperature gauge adjustable?
ROBERT BLAKE, via email