The red oneWhat you guy add to you gas tank when you only start it up and drive every -2-3 month or even longer . I look it up on sta-bil and it have 2 version . I think one is pink other is blue
That another great tips . Since we here , anyway to avoid flat spot on tires . I heard if I max out my tires pressure it will help again the flat spot when storage . But if I want drive around during that time....