I have a 2005 Yamaha F225 with approx 260 hrs. Motor starts and runs fine. I recently noticed that I'm getting an oil/gas sheen on the water after shutdown with motor down or tilted, and while flushing with the hose attachement, appears to be coming out the cooling passages. Taking the cover off, I dont see any oil or gas leaks. The oil level on the stick is in the normal range with no signs of water in the oil. Any thoughts or suggestions?
