On the Cobra's the low oil sensors are at the front and back of the pan so if you park on an uphill or downhill it will trip one of the sensors which kicks on the light. Also, the drain holes in the 4v heads are rather small and the heads hold a quart of oil in them so if you shut the car off for a few minutes and then start it again, the oil doesn't have a chance to leak down out of the heads and the oil level will be low enough in the pan that it will trip the light. I only believe my low oil light if the car was parked for over an hour on dead level ground.