[Jay Laifman]

But, with the question of why do Porsches do it more than other cars, one answer was the air cooled. A number of people dismissed the horizontal build. But, the way it's always been explained to me, on a verticle or V engine, when the engine stops, all the oil slowly can find its way back down to the bottom. With the horizontal engine, that bottom is often the cylinder itself. So, on every start up, the oil that stayed in the cylinder is burnt to smithereens (and thus that puff). So, the number of starts per mile might have something to do with that, as with the angle of the car when parked. And, maybe even without gravity pulling oil down out of cylinders, there is more there to get past rings to be burned out.