dd, on my 40, the oil sensor senses the amount of oil in the reservoir only.......goes off when its low. if you remember reading a few weeks ago, i undid my oil injection system, and now manually mix the oil, just for peace of mind. the guy at the shop said the sensor was bad, and mixing the oil manually should stop the beeping. well, i too it out couple of weeks ago, and it still beeps, on and off............i jut ignore it, because the oil is mixed and i can tell its cooling.

