My son's Evinrude has oil leaking from prop area after use on the wate. We just noticed a small spot on the driveway under the motor. It appears to be coming from the exhaust. We also noticed oil up under the flywheel of the engine. Could the two problems be related? We knew the leak under the flywheel was there, but we never had oil show up thru the prop exhaust. We are reasonably sure the oil below is not gear oil from the lower unit. It's more like oily exhaust. Any guidance would be appreciated. Thanks, George Santee, CA