How "porous" is red primer?

I was looking up primers under TCP GLOBAL on the puter, I use their stuff mainly because I have problems with paints even with good respirator ( I know I need a fresh air suit), and I can get some low VOC from them. I ud=se thei primers, urethane paints, papers etc..... yes they are and ship SLOW!!!!!

they do offer a red oxide color in their epoxy DTM. I have gotten great results with their DTM primer over bare metal, the stuff like ugly on an ape to any GOOD surface. with activator $140/ gal or so., more or less. add reducer for it to be used a sealer, which I do.

like mentioned the old red oxide laquer primers are totally old school and not in the league of modern materials, I think. you can get this primer in red oxoide, grey, black, white. I admit i'm no expert, but have messed with auto primers and paints since the 60's BUT i'm NO bodyman!!!!!
hhhha

i'm sure like anything the more $$ ya pay for any paint materials the better quality, and life it offers. but I don't build mega show cars just try ot have NBO rust, decently straight DRIVERS! if the chemical didn't bother me,, a nd the cost bust my budget, I personally would use PPG products. I have had good results with DuPont, but I have nothing to complain about TCP products.....