Delo 400 multigrade heavy-duty oils reduce operating costs with exceptional soot dispersancy and wear control to extend engine life to overhaul. Billed as a "world oil," it meets the engine performance requirements of North American (API CI-4), European and Asian engine makers. This gives users who have a variety of brands consistent quality and performance. Oil costs are lowered through extended drain intervals. The oil can be used in four-stroke gas and all naturally aspirated turbo and modern EGR diesels for reduced oil inventory costs.