Arctic Shield™ + Ultra Low Sulfur Concentrate is a highly concentrated ashless ultra low sulfur complaint diesel fuel additive that is specifically formulated to provide Ultra Low Sulfur Diesel Fuel maximum cold temperature protection against fuel gelling, waxing, and fuel line freeze-up. Arctic Shield™ + Ultra Low Sulfur Concentrate can also be used in all types of diesel fuel including low sulfur diesel fuel and biodiesel blends. Learn more about this crucial cold-weather diesel fuel additive by visiting www.schaefferoil.com/documents/196-300ULSW-td.pdf.