I just used two bottles of Diamond Brite and got a big portion of the trailer polished. It is a 1955
Flying Cloud and has never been polished to my knowledge. Having used both, I have to agree that it is not as good as Nuvite F7 because it dries out too quickly but that could be because it was 85 degrees today and it spatters which is annoying. For $12 a bottle the Diamond Brite did not work out too bad. My 1 pound jar of Nuvite is on back order and it was just too nice today not to polish. I hope this helps anyone that is curious.