I have mercruiser 260..old model, I think around 1980. Two weeks ago I saw milky stuff in the bilge and thought it was oil leak from engine. The oil was at "Full". Few days later I noticed the oil level has lowered to "Add more oil". For the last few days its still at the same level. It is not going down anymore. I think it has reached the level of the leak...Can someone help where to start troubleshooting this? I am new to boat engines. I know a little bit about old car engines...thanks...
