Quote Originally Posted by h2o-ski View Post
It most likely does not have an oil cooler. I do not see how changing the thermostat would get water in the oil, it sounds like a failure in the engine. There have been cases of exhaust causing the mixing but not as often.

Quickest way to figure it out is to remove the intake, that way you can see in the valley and check the intake.
Well, that was what I was afraid! Thank you for the information!