Why don't you start with year and model and current mileage. It matters.On this site it was recommended I look for the classic check valve. Well good news the mechanic cleaned it up and it's still in there! But that's basically all he did...
He replaced my pcv valve and cover even though I replaced it 20k ago. Didn't listen to me when I said it and didn't explain how he figures it was the whole problem. I get home I go under my car guess what.... Oil leaking from my oil pan. .. he didn't even check under my car!
Now with this all said in looking for a new mechanic but im not sure what to ask to be checked. Because if the valve cover and oil pan blew at the same time doesn't that mean something else may be going on?