It causes the fuel to burn much cleaner, thus eliminating a lot of particulate matter that would otherwise go into the exhaust system causing regens. It also cleans out much of the matter already trapped in the filter. This eliminates exhaust backpressure allowing the engine to run easier and cooler as well as lowering the aggravation and down time associated with particulate filters. Reduces particulate matter in filters.The item "Lucas Oil Products 10873 Diesel Deep Clean Fuel Additive 64oz Bottle (6 Pack)" is in sale since Wednesday, March 17, 2021. This item is in the category "eBay Motors\Automotive Tools & Supplies\Fluids & Chemicals\Other Fluids & Chemicals". The seller is "1185corp" and is located in Hauppauge, New York. This item can be shipped to United States.