I never bothered to swap the 'Farmall Cub' Scout from messy old-fashioned canister filter to newfangled spin-on.
I actually added a messy old-fashioned canister bypass filter...(another scrapyard goodie) I think it's an AC. says Military Standard Filter on the lid and NAPA keeps the cartridge in stock.
Silly little 4-cyl thing holds almost 8 quarts of oil.