Hot Shot's Secret Premium DEFender is engineered to clean and prevent DEF crystal buildup

Harmful deposits in the SCR system can reduce performance, increase fuel use, and lead to costly repairs or downtime

Restore performance while protecting the injector, sending unit, tank and more

Use at each time refilling DEF to prevent white crystallization deposits from forming

Triple-filtered for purity

Ash and dye- formula not to void the manufacturer's warranty when used as directed