My shop gave me my car back after a header install with all four valve cover bolts on the passenger side loose. They were loose enough to wiggle with your fingers and I never realized it and drove it like that for a while. This might be a dumb question because oil is only leaking from the passenger side there. But would that cause the oil leak I've had? Finally got the time to sit with it and look at everything and realized that might be it. Thanks

 

Yes.