Help me sort my combo

Is 1440 enough? Do you know? Because I don't. If it is, I stand corrected. I do know that Amsoil was involved in a suit years ago regarding some of their claims. I don't remember the details, but they didn't win the suit. We were a dealer for Amsoil at the small family operated machine shop where I worked both in and out of high school. I never tried it, because it was expensive and I am cheap.