Hello folks, been here awhile, first post. Was reading an October 1922 issue of Farm Mechanics and ran across an add for Polarine motor oil and their recommendations for oil weights for tractors the in use. There are a number that I have not heard of before. I wonder if any of you have seen or have any of them. Here is the list: Akron,Allied,All Work,Andrews Kinkade,Appleton,Armington,Automotive,Bear, Big Farmer,Biltwel, Burnoil,Capitol,Colman,Common Sense,Dakota,Dart Blue J,Depur,Dill Harvesting,Farm Horse,Farquar,Fox,Good Field,Grain Belt,Great Western,Illinois SuperDrive,Indiana,J.T,Kinnard,La Cross,Leonard Four Wheel Drive,Liberty,London,Magnet B,MarkVI Once Over,Midwest,Mohawk,Nilson,Ohio,OilGas,Plow Man,Prarie Dog,Quadpull,Reed, Rex,Savage,Shawnee,Shelby, Square Turn,Topp-Stewart,Townsend,Traylor,Triumph,Trundar,Uncle Sam,Vim,Wetmore,Western,Wheat,Whitney,Whicita,Wils on,Wisconsin, and Yuba Ball Tread. Long list, hope you find it interesting.