I tell you what. I swear by Duralube.I have seen that stuff work miracles.After my Dad blew his 150's 300.And replaced it, I told him to do himself a favor,and add a quart of Duralube to the oil, I said it couldn't hurt (He doesn't like to check or change the oil for that matter) Anyway a few months later he askes one of my brothers to check his truck out.He said it was running slightly warm,and didn't seem to be running right. After my brother checked it out .He told my dad it would help if he had oil in the truck .He pulled out the dipstick and it was bone dry.He worked the truck like it was a 1 ton too.That sold me on that "snake oil".I have used it ever since
