I am totally new to boating. I have recently aquired a boat from a friend that has a couple of things wrong with it. I picked it up this winter and know pretty much nothing about it except that it ran last summer, but it had noticable water in the oil. I tried to start the boat, just to see if it would turn over and it didn't. After further investigation I found that the starter selinoid is bad. I tried to tun the engine over using the flywheel since the starter was out. I heard a noise that sounded like ice splitting, it was very difficult to move, but once I broke it loose it spun as if it should. The only thing that was odd was that opon turing the flywheel it pushed up oily ice. I am not sure if water or oil usually flow through there or not. I guess my question is how to find where this water got into the oil? On a normal car I would guess a head gasket, but I know that both water and oil flow into the stern drive. Is there a common place where they may come into contact with one another? The boat is a 1972 glastron with a volvo penta 250 sterndrive and a 170 (I think) volvo penta inline 6. Any help will be much appriecated.