VP Diesel All-In-One is a complete diesel fuel additive, offering year-round performance and protection for diesel engines. In warm weather, it boosts cetane, enhances fuel economy, prevents injector deposits and sticking, lowers emissions, increases lubricity, and improves overall performance. In cold weather, this diesel fuel treatment also reduces Cold Filter Plugging Point (CFPP), prevents gelling/icing, and shortens start time for reliable performance in any season.