Your 30-year-old stock metal tank is a ticking time bomb that’s prone to rust, external corrosion, and internal delamination that sheds debris, clogging lines and destroying expensive fuel injectors. Upgrading to an S&B high-capacity poly tank not only drastically increases your driving range, but it also permanently eliminates these risks because it’s completely immune to rust, prevents fuel-contaminating condensation, and absorbs heavy impacts without cracking.