Dura Lube Diesel DPF & Catalytic Treatment is a complete fuel and exhaust system cleaner that reduces soot build-up and while cleaning your vehicle's sensors and injectors. Formulated to protect and treat the diesel emissions and exhaust systems - diesel particulate filter (DPF) (post-2009) and catalytic converter (pre-2009) from oil poisons and clogging. This will aid in reducing the carbon footprint of your vehicle and improve the overall performance; helping to increase fuel efficiency, and allowing them to last longer. Benefits: * Lowers soot particulate emissions and reduces clogging * Reduces soot build-up * Helps for fewer regenerate burn cycles * Restores and helps maintain emissions & exhaust efficiency * Improves Engine Performance and Fuel Efficiency * Ideal for Stop & Go Driving or long idle situations * Safe & Effective in all Diesel vehicles, including bio-diesel Directions: Add full bottle into 16 gals (60 liters) of fuel or 1 oz. per gal. (30 mL per 3.8 L). Recommend Usage: Use once every 3 months for optimal performance. Results vary on driving amounts and engine conditions.