This stuff. Seafoam, it's bad-assery in a can. Great when it comes to storing motorcycles for the long winter nap (We ain't there yet, so hold the stoopid comments, Francis.) And it's Minnesota made. Here, here. And it does so much more than a plain ol' gas stabilizer. It cleans shit, too. And if you ask nice, the company might even send you a cool sticker for your toolbox. We're whores for stickers around here.