FWIW , I am a believer in Marvel Mystery Oil. For a quarter century I owned and operated an ATOMIC 4 , a flathead inline 4 cylinder gas engine, auxiliary propulsion for a 34ft sailboat. It is a delightfully simple , reliable engine built by Universal of Oshkosh Wi. The ATOMIC 4 has an almost cult following, and to become part of that cult one must swear to total faith in Marvel Mystery Oil.
