He is real mechanic. He din't all ways work for wally DC. Matter of fact he has his own project car. Its a dodge dart, and he has rebuilt it from the ground up. I would'nt do it I din't trust him. He also works on some of my step dads ranch equipment. I trust him. He knows a lot. He not just some jiffy lube guy. Plus I don't know what your talking about I'v seen them work on the engines.