And i have to mention,whole engine look brand new.i mean every single part of it,at first i thought they cleaned it very well,but now i am not sure how much of it new. At this point i am very confused if i can trust this vehicle... So far i made 300+ miles with it. Full tank seems like 53 mpg. It drives really good and quiet,But a very low frequency sound taking my attention,it is a noise that very hard to hear,idk what is that. And last thing it accelerate very aggressive.
If the Head Gasket was recently replaced and done properly, you should see new gaskets on the cylinder head, intake manifold, exhaust manifold and valve cover. The mechanic probably saw the corners of the new gaskets. The RTV on the timing cover will also look different than factory.