Hot Shot's Secret EDT+ Winter Defense Fuel Additive, 16 oz

Hot Shot's Secret EDT+ Winter Defense is a concentrated 16 oz diesel additive that prevents gelling, improves cold starts, disperses water, and cleans injectors so your diesel runs reliably in extreme cold.

EDT+ Winter Defense Fuel Additive is formulated for diesel engines operating in freezing conditions. The 16 oz bottle treats up to 200 gallons of diesel and combines anti-gel, lubricity enhancement, cetane boost, water demulsification, and fuel-system cleaning in one product. It’s intended to reduce wax buildup, protect components from corrosion, and help engines start and run smoothly when temperatures fall below typical cloud and pour points.

How does this additive stop diesel from gelling in cold weather?

The formula minimizes the size of wax crystals that form as diesel cools, allowing treated fuel to flow through filters at temperatures up to 20°F below the fuel’s cloud point. By keeping wax particle size small, the product reduces filter plugging and helps maintain steady fuel delivery in winter conditions.

• Reduces wax crystal size for improved filter flow
• Effective at temperatures below the cloud point
• Helps prevent fuel filter clogs and loss of power

Will it protect my fuel system and improve engine performance?

Yes—EDT+ Winter Defense increases fuel lubricity and raises cetane, which supports smoother combustion and protects pumps and injectors from wear. It also contains cleaning agents to remove internal and external injector deposits, helping maintain fuel-system efficiency over time.

• Improves lubricity by up to 32% to reduce component wear
• Boosts cetane by about 7 points for easier ignition
• Includes detergent action to clean injectors and fuel lines

How does it handle water and ice in diesel fuel?

The additive demulsifies and disperses water in the fuel, so moisture remains in suspension and can be burned or managed by fuel filters rather than freezing and blocking lines. This lowers the risk of ice formation and corrosion inside the fuel system, even at very low temperatures.

• Disperses moisture to prevent ice blockages
• Helps guard against rust and internal corrosion
• Works in extreme temperatures down to -40°F when used correctly

How do I use the 16 oz bottle and what dosages work best?

One 16 oz bottle treats up to 200 gallons of diesel. The standard rate is 2 oz per 25 gallons; double the dose when temperatures fall below 0°F. Begin treating your fuel as temperatures approach the fuel’s cloud point and add the product when filling the tank.

• Standard dose: 2 oz per 25 gallons of diesel
• For extreme cold (<0°F): double the dose
• Pour directly into tank during fill-up; 16 oz treats up to 200 gallons

Who is this for? Hot Shot's Secret EDT+ Winter Defense is designed for diesel vehicle and equipment owners who need reliable cold-weather performance—truck drivers, farmers, fleet managers, and anyone operating diesels in northern climates or high altitudes. It’s suited for on-road and off-road diesel engines using ULSD and helps reduce winter fuel-related downtime when used as part of routine cold-season maintenance.