Hi all, I just purchased my very 1st boat. It is a 1990 Ranger with a 150 hp V6 engine. My boat has been winterized since November. I parked the boat in my yard with the prop trimmed up. I later was told to lower the engine for the winter. I did and about an hour later I see drops of oil coming out of the prop. Should I be concerned? I was told that since the boat has been sitting for a while and it just turned cold that this is normal. Could someone help, I know nothing about boat motors.