I am Sooooo Confused over Paint

dartfreak75 said
I saw a video where a guy was working on a customer's truck and the truck when new was coated in por 15 or some other undercoating products and from a distance it looked like it was doing its job but he discovered that it was rusting under the coating bad! Like the floors where gone. Iirc he was replacing brake lines and the brackets where even rusted in half the whole truck was rotten because of this coating it was just holding in the moisture under the coating. And this was like a 10 year old truck (farily new to me) and I was a lost cause.

WAYyyyyy back in the 60's I had worked after school (17 yrs old) and had enough $$ to buy a brand new 2 horse side by side trailer. I was so damned proud. The trailer manu. had a new method to "preserve" those wooded 2 x 10 floor boards. They undercoated the heck out of the bottom sides and laid a really think coat of tar (probably in thick!) over the top side, then rubber mats on that. About a year later, I had just loaded a horse and his foot went thru the floor!!!! Dry rotted! in a year!
Reminds me of Por 15 somewhat.
I have restored more than my share of old Mopars since about '95, I get along well with Good epoxy primer, urethane primer, sometimes a little polyester primer, acrylic urethane, Rusteolum ( NO not the top coat) and staying away from most all aerosols!!!
Disclaimer: Your results may vary. :lol: