Matter of fact my mechanic did that, after it started getting really hot fluid was coming out, he said something about he doubts its the HG because there's no white smoke coming from the exhaust and that the car runs too smooth for it to be the HG unless there's a really small leak. Something about it could be coming out since there's no circulation for the fluid to keep flowing so when it's getting hot it's coming out of the only availble hole. He didn't rule out that possibility though. Don't take my word for it though, I could be fucking up some of the things he said to me as I don't remember everything he said word for word.