I painted the '87 v20 flatbed I was driving through the winter of 09/10 and spring of 2010 with a foam roller and less than a half a gallon of gloss black Ace Rust Stop (Ace branded rustoleum, self levels better than rustoleum and is cheaper)..The truck was 4 colors before the paint, just one afterwords, and doesn't look bad..Course, it used to be a pig farmer's farm truck, and looked the part. All we did was wash it with dish soap, let it dry, and roll on one coat. The skies actually opened and poured on it just as we finished, and even with the water marks, it doesn't look bad. The dent in the passenger side of the cab at the back edge is more noticeable..it almost presses into the rear window rubber.