HGC

Is that a name brand or a generic term. It's actually phosporic acid, isn't it? I have looked at Lowes, True Value, Ace and various chain auto parts places. So far, this is the best I have found.

[IMG]local://upfiles/82474/A4EA201FF7CE4D279A50A0FE7EB75B3C.jpg[/IMG]

my77stang

they have it at my local ace in gallon jugs

67 evil eleanor

PPG MetalPrep (I think) is thename. Anywhere that sellsPPG products. You are wise to use it (phosphoric acid). Heres a site.
http://www.tcpglobal.com/autobodydepot/rustremove.aspx

usmc69mustang

I got two gallons from the HOme Depot

stangimgood

have you tried to sand it after it is converted? does it turn to a hard black surface? or is it easy to sand and the result is a rusty looking surface again? after you convert it does it have to be painted to prevent further rust? thanx

fastbackford351

Ospho rocks. [sm=icon_rock.gif]

67 evil eleanor

I think the best thing that phosphoric acid does is kill the the surface oxides that occurs after the bare metal is exposed. Also it leaves a zinc phosphate coating that will protect the bare metal untill the finishes are applied. You may have this confused with POR 15, which is hard to sand and nothing wants to stick to after it cures (better used in hidden areas only).