havok209

At first it thought it was an exhaust leak from my headers. But I tightened those badboys and it didn't stop. So I listened to it more carefully and I noticed it came from under the valve covers. Does anyone have an idea on what it could be and how to try to make it stop? Right now its got 10w30. It might be too cold for it. Its around 40-50 degrees here. Should I switch to thinner oil? Thanx for the help..