Diesel, natural gas or gasoline, no matter what powers your vehicles, Valvoline Premium Blue One Solution Gen2 15W-40 Engine Oil – a multi-fuel lubricant – may be the only engine oil you need. Featuring proprietary One Solution Gen 2 Technology to protect engines in on-highway and off-highway applications, including Cummins, Detroit Diesel, Volvo, Mack, Renault, Ford, Dodge Ram and Chevrolet, it’s designed for extended oil life in high-heat.