Yes I realize that it not making oil, its fuel that is getting in the crankcase, its a commonly used term for this problem. Often this is caused by the engine not getting warm enough to burn it off thats why I asked about the thermostat. I know some other engines that have had this problem have been fixed by using a themrostat that runs a little warmer. It is in a Ranger boat with a seperate kicker line from the main tanked, plumbed in at the factory. I have not removed the thermostat yet, will get to it this week. Oil is not milky, it does smell like gas, I unhook the gas line when not in use and drain the carb when not using for more than 2 weeks. Thanks.