Larry, You are correct about the engines being black. After WWII, Massey Harris was building tractors so fast that Continental couldnt build engines fast enough. Many MH tractors were built but had no engines, so thats why they were black to get to MH faster so they could complete their tractors and get them to dealers. So to answer your question, yes the radiator should be black. If anyone wants to add or correct something I said, please feel free to do so.