valve cover gasket

I had a decent coolant leak, and the mechanic said the plastic elbows were urgent, but the upper intake manifold gasket and valve cover gaskets also had leaks. I can't remember if he mentioned about the lower intake manifold gasket or not. I had him do the aluminum elbows and I wanted to do some...

Ok here is some backstory if it can be relevant: I bought this 2003 LeSabre from an auction about 7 weeks ago, its my first LeSabre so everything's new to me. The motor was coated in oil with small pools in the space between the plenum and front valve cover. There was chocolate milkshake on the...