If there was oil in the cylinder like helmut sugested there could also be oil in the exhaust. I would take it off and have a look myself...It would probably be milky if it had water in it, but I think I would change the oil anyway, just to be safe. If the 4-wheeler was turned up sideways enough, it will get some oil in the cylinder, but it should burn out after a while.Yes,
There is no milky substance at all in oil. I was always told that if its not milky, there is no water in it. Is that always the case?