The water will eventually settle back to the bottom. I have seen it with boats that have gotten water in the oil. With that said , I have used synthetic oil for awhile now and will always use it. There are many benefits to using synthetic oil in cars. As far as the price, it cost me about the same as it would to pay someone to change the oil. So I change the oil myself and use synthetic. To me its a no brainer. shawnOriginally Posted by AlaskaVX