Power Service’s Diesel 9-1-1 Fuel Additive ensures you are Ready for the Road Ahead as an optimal cleaning solution in winter emergencies. This Power Service winterization additive helps to reliquefy gelled fuel within the engine system. In addition, if your vehicle does not start or gain power during cold weather, this fuel additive will de-ice frozen fuel filters. At the same time, this Power Service formula contains Slickdiesel Lubricator, which helps prevent fuel pump and injector wear from low-quality ultra low sulfur diesel fuel (ULSD). As a result, this heavy duty winterization additive is the best choice for getting you back on the road, minimizing downtime. FleetPride is your First Click in Heavy Duty .