Capacitive Fuel Level Sensor

A factory fuel gauge is too coarse to prove anything. This capacitive sensor is fitted into the tank and calibrated to its actual shape, so you see fuel level as a real, continuous measurement — which means a siphoning event shows up as a sharp drop with a time and a place attached. It pays for itself quickly on any fleet running diesel where consumption figures have never quite reconciled. Calibration is included in installation; an uncalibrated sensor produces numbers nobody will trust.