Power Service 03080-06-6PK +Cetane Boost Diesel Kleen Fuel Additive - 80 oz, (Case of 6) Cleans dirty injectors and prevents injector sticking in all engines, including High Pressure Common Rail systems Boosts cetane up to 6 numbers; engines run smoother with less power lag and faster cold starts and boosts power; reduces need for downshifting during high-load conditions Improves fuel economy up to 8 percent; fuel savings exceed cost of additive Contains Slick diesel lubricator for maximum fuel lubrication; protects pumps and injectors from accelerated wear Effective in all diesel fuels, including ultra low sulfur diesel, biodiesel and biodiesel blends