Diesel trucks are made tough and can go just about anywhere but what if the conditions you go to or live in put extra demands on your fuel and engine? Diesel fuel has a tendency to have issues when it comes to colder temperatures. As the temperature drops, paraffin wax can crystalize in your fuel lines and clog up your fuel filter. Use Hot Shot's Secret EDT+Winter Defense infused with LX4 lubricity extreme to increase fuel economy, boost power, reduce the need for DPF Regen cycles, and help prevent fuel line freeze ups down to -40°F. How does it work? When you add EDT+Winter Defense to your fuel, it becomes a premium fuel with improved cetane, speeding up the oxidative process during combustion, and giving you more power and improved mileage. Additionally, the EDT+ also prevents gum and sludge formation. Water buildup in winter is another danger that Hot Shot's Secret additive helps with as it disperses condensed moisture with its special demulsifiers. SPECIFICATIONS & DOSE SIZE: Tank Size Premium Dose Above 0°F Premium Dose Required Below 0°F 25 GAL 2 OZ 4 OZ 50 GAL 4 OZ 8 OZ 100 GAL 8 OZ 16 OZ 200 GAL 16 OZ 1 QT