you are right kwiksilver, the freeze off is not a lubricant, i'm not sure exactly what it does but it does something chemically to rust, and carbon is purely melted. like i said when you get the first plug out you will be like HOLY fuck it looks brand new!
i leave the freeze off in the cylinders to decarbon the pistons and its a hell of a smoke show, works better than our top end cleaner, i use it to clean pistons, valves, ports, anything metal that needs cleaned it cleans.
we use PB blaster for most everything, well most of the techs do, but i just dont seem to have good results with it. the best penetrating lubricant i've found is schaeffer's penetro 90. but since using freeze off i prefer it for most jobs.
http://www.schaefferoil.com/penetro-oil.html
http://www.bobistheoilguy.com/forums...Number=1678522