use a wire brush & puty knife at least to knock down rust
yes these types paints encapsulate rust so little air gets to the surface
no produce is a sure cure except at best, blast. bare good solid metal is what you want
good luck
https://www.stovebolt.com/ubbthread...;Number=495840&Main=68166#Post495840

btw, i gloss por-15 my truck

Last edited by carolines truck; 01/22/2009 1:36 AM.

Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe

Every Shaver | Now Can Snore | Six More Minutes | Than Before ... | Half A Pound for Half a Dollar | Spread On Thin | Above the Collar || BURMA-SHAVE