Distance+ is an all-in-one diesel treatment that replaces ingredients lost while removing sulfur in ULSD fuels. It includes a deep cleaning detergent that keeps your fuel system clean, a stabilizer to keep your diesel fresh for up to one year, and can increase cetane up to 12 points. Not to mention it injects lubricity that is missing in ULSD and bio-diesel fuel. Distance+ Diesel Treatment replenishes & replaces properties lost during the ultra-deep desulfurization process in ULSD fuels. Next, it will help restore or increase lost performance & fuel economy caused by poor or inadequate diesel blends. Our proprietary blend of deep cleaning detergents keeps your fuel system clean & prevents carbon deposits from forming on valves and injectors. That's in addition to a maximum cetane boost of up to 12 points that will improve cold starts, provide a smoother running engine & reduce exhaust smoke. Does it Increase Fuel Mileage? We have received a lot of feedback from REV X customers that Distance+ does improve miles per gallon. Although this may be true, we will not claim how much it will increase fuel mileage. Unfortunately, the additive industry is full of these misleading and primarily false claims about fuel mileage increases. It's important to realize these claims use “independent” tests, and for the most part, are performed in a controlled environment. Because nobody drives on a dyno, real-world results will vary based on driving style, terrain, and traffic.