wondered off this tech part and in to the 80/100 board... i think ever time i went over they were talking about HG's blowing??? and i cruise this board a lot and almost never see it??? is somthing not to worry about in the fj-40's and 60's? besides just seeing gray sludge in the cooling system is that the only way to tell???im not really to worried i just never really saw anything on this board about it..its prob why the 40's and 60's are cooler than 80's anyway