The engine oil light on the check panel is on, so I go and check the oil and....no oil on the stick at all, even when the car is cold. I put about a quart in and the light goes off. I check under the pan and can't find a crack, hole, nothing. A couple days later, the light comes on again, so I check the dipstick and no oil again. even in the snow, there is no sign of an oil leak underneath of the car. Anyone have a clue, or is a magician stealing my oil?