POR 15

[serv]

I live 15 or so miles from whats said to be the second saltiest body of water besides the Dead Sea. Around here, Ospho Rust Converter is great for treating rust. So is regular old household Vinegar if you can submerge the rusted part in the vinegar for 1/2 a day to a day or so. The time will vary depending on the severity of the rust as well as the % of acetic acid in your vinegar. I did por15 on a frame off freshen up job (gmc syclone pickup) back in 2005 or so. Held up well.

Not to take anything away from por15 but we now use 2 part Epoxy paint for any semi truck projects that need black paint. Unbelievably durable paint that's compared to a baked-on porcelain finish. No primer required. I suppose por15 is a better choice or more convenient for maintenance touch up work. I remember por15 was really thick stuff when I worked with it. I applied it with a brush just like we do the epoxy paint.

below's a link of the last stuff I bought. They use it on offshore oil rigs. It was not cheap but not too expensive either. You need to move fast when applying because it dries really fast! You can smack this paint with a small sledge and you'll have trouble chipping it after fully cured. like they say, just my two cents.

http://www.ppgpmc.com/Products/P064/AMERCOAT-370.aspx


here's a link to the Ospho

https://www.walmart.com/ip/OSPHO-Rust-Tr...3=&veh=sem



edit:
here's a link to a video that shows how vinegar deals with rust. the video in the link is dealing with a metal part that is barely surface rusted. This is a much longer project for real rust. the stuff I've done took as long as 2 days in some cases. You cant leave the part in vinegar for too long for the particular job though. The acid can eat into your metal if you over do it or don't keep tabs on it. when I've done it, it puts on a little smokey bubble show in some cases. the acid really goes after the rust first.

https://www.youtube.com/watch?v=TlcL_vHODkc