DPF Cleaner Tool for loosening and removing ash deposits from particulate filter systems without disassembly. Applications Particulate filter systems Product characteristics Fast acting Solvent-free Non-corrosive Non-flammable Usage instructions: Before use, carefully read the instructions provided on the packaging. Valvoline™ DPF Cleaner should be at room temperature before use. The operating temperature should be between 5 and 30°C. Shake before use. Wait for the engine to cool down before use (maximum 50°). Remove the temperature or pressure sensor from the filter. Insert the special tube into the opening and empty the container at the following intervals: Spray 3 to 5 times; wait 5 seconds for the product to absorb. Install the temperature or pressure sensor. Start the engine and let it idle for at least 15 minutes to allow most of the liquid to evaporate. Perform a 30-minute test drive. This may cause the product to evaporate.