Rislone® 4744-4PK DPF Clean™ Diesel DPF, Exhaust & Emissions System Cleaner, 16.9 oz, 4-Pack

Waste of money, 2018 ford f250 , 125453 kilometres, 6.7 power stroke. Followed directions and it did absolutely nothing for my truck, engine light still on and no performance difference.

This product cleared the CEL on my 2014 VW Jetta Sportwagen TDI. When the mileage reached around 140K, the CEL came on intermittently for a few months, then it stayed on solid. I guessed the problem had to do with the emissions system, so I bought this product. I figured it was worth trying for $100 or so because I knew dealer service would be expensive. It took two bottles to clear the CEL. I spaced them 500 miles apart. After extinguishing, the CEL has not returned. Going forward, I plan to use the treatment every 4000 miles. As per the instructions, I emptied a complete bottle into a half-full fuel tank. Then I drove about 35 miles at low speed. Then, I added diesel fuel as normal.

Values for money. Worked!!! Saved me a huge repair bill on my VW Passat.

This is a good product to use to keep DPF (diesel particulate filter) clean and to clean a dirty DPF to eliminate the check engine light code. One treatment has kept the CEL from reoccurring for the last 2000 miles since I used it. I plan to treat every 5000 miles as a precaution to clean the DPF and fuel injectors.

Took a while longer to work than the instructions but cleared message. Debating whether or not to buy one to have on hand.