Every filler I could find only had an operating temp rating of 350 degrees sustained use ... that was the MAX ... most only sustained to 300 degrees. QuickSteel was the only one I could find rated higher. It's rated to 500 degrees sustained. That's not the only plus ... it's also the cheapest of all "fillers" that I have priced at less than $4/tube. Each tube will do 3-4 injector ports.
Last edited by fastcougar; 01/23/06 07:16 PM.