Hot Shot's Secret Premium DEFender (DEFA8Z)

Tired of DEF crystal buildup causing headaches for your diesel? Hot Shot’s Secret Premium DEFender is the ultimate solution. It’s engineered to clean existing deposits and prevent new ones from forming, protecting your entire SCR system from performance loss and costly repairs. Just add it with every DEF refill, no BS.

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• Cleans and prevents DEF crystal buildup throughout the entire SCR system.

• Dissolves existing crystal deposits that can clog injectors and lines.

• Helps clear common emissions-related trouble codes and avoid "limp mode."

• Restores proper DEF function and maintains SCR system efficiency.

• Lowers the freeze point of DEF for reliable cold-weather operation.

• Adds critical lubricity to DEF pumps and injectors.

• Triple-filtered, ash-free, and dye-free for purity.

• Safe for all DEF sensors and won't void the manufacturer's warranty when used as directed.

• Directions:

  • Treat Ratio: 8 oz treats 20 gallons of DEF.

  • Dose: Squeeze 1 oz per 2.5 gallons of DEF.

  • Simply add directly to your DEF tank or cube when refilling.

  • Warning: Do not add more than the recommended dose. DO NOT ADD TO DIESEL FUEL.

• Compatibility: Works with all DEF brands and is safe for all diesel vehicles with an SCR system, including off-road, construction, and marine diesel.

• Recommended For: Agriculture Diesel, Construction, Diesel Vehicles, Marine Diesel, RV Diesel, Semis, Small Engine Diesel.