I have a 2003 Merc 4 Stroke 60hp. It has a 16inch pitch 3blade propellor. The motor is on an 18ft flat bottom aluminum boat (60in bottom). This weekend I noticed oil coming out of the exhaust port (I think it is the exhaust port). The port is on the back of the motor just above or below the water outtake. The oil level is a little low but is in the operating range. Anyone have any suggestions; is this normal? The motor probably has 10-12hrs. On the other hand, is this propellor appropriate? Could I put on a larger pitch? Would this add some speed. Also thinking of adding a jack plate; any suggestions? I don't have a tach. Will probably ask dealer to add on this week when I bring the motor in.