I have used it on several Model "A" ford frames. I agree that you should only buy what you need. They sell a 6 pack of pints that work well. Store open containers in refridgerator as it will last longer. It can be painted over with proper preperation. They frame paint is U/V sesitive. If used where the sun can shine on it then it will fade and get a white chalky apperance. Use rolled up tape and cigarette butts on the hole in the frame because if you don't and paint over them you will be drilling the holes out during re-assembly. And the best time to use it is when the humudity is high as it adheres best in these conditions. Look at POR 15 on google and they have there own web site. I have had great luck with this product.