I was running 10-30 oil after an oil change and it started throwing watery looking oil from what I think is an overflow tube on the right side of the engine. Realized that the owner manual says specifically do not use 10-30. Drained and changed filter and used straight 30 weight per owner manual. When I check oil level after warming up, it appears overfilled. There is oil about halfway up the check/fill tube. I put in stated capacity of 7 qts. Engine temp remains good when running hard. I am perplexed. Questions: How can than there be so much fluid in the crankcase? Why does it appear to be watery? Thanks for any ideas.