I race radio control cars and I just made a kewl discovery.. The motor spray that I use to blast out all the crap out of your motor after racing works awsome for removing the thermal grease off the cpu die and the heatsink as well... it is high pressure so it moves the crap out of the way and the solvent disolves the grease and the alcohol ends up dry.. So you are all set to go again with a nice and clean surface to apply your fav. thermal grease...