My opinion, and please don't take it as anything caustic, but I think just because you are in the vehicle restoration business, it does not make one an authority on all paint systems. I have also been in this business (restoring classic cars and motorcycles) and would have not recommended house paint for a vehicle. The idea of house paint on a vehicle sounded cheap and ludicrous. Then I had an extra generator trailer that needed a refresh. After reading about it I decided - it's only a trailer...I'll give it a go. It received a coat of Behr exterior grade house paint in color matched 383 Green. It sat outside for about 3 years after being painted and I regret not taking photos! It held up beautifully. The same cannot be said of my M1009, painted with PPG Hotrod Flats Desert Storm Tan. This paint is a catalyzed urethane, applied per instructions, including correct substrate (staying in the same mfg paint system), and prep. In 3 years it has faded noticeably. My M1009 is now undergoing a Behr Marquee flat exterior grade repaint. For the price of just the harderner for PPG, I bought 3 gallons of Behr, black, tan, and brown. I will post photos of this when it is completed.
