The best paint to use on an 860 Massey Ferguson Combine is a self etching, acrylic alkyd primer, such as Rust-Oleum’s Self Etching Primer. This primer is designed to bond directly to the metal surface, creating an excellent base for the finish coat. The finish coat should then be applied with a two-part acrylic urethane paint, such as Rust-Oleum’s Professional High Performance Enamel. This paint is designed to provide a durable, chip-resistant finish that will withstand extreme conditions. Once the finish coat is applied, a clear topcoat should be applied to protect the finish from UV exposure.