its a yay,they also have a wet sump,,the oil sits in the sump and drains back down into the sump after it gets pumped into the rocker area,so do the 350/400/650 fours,,the 750 has a dry sump,its held in a tank and is pumped around the engine and back into the tank where its stored,both types lubricate the entire engine and gearbox with the same oil.