Cummins Filtration through many years of research and innovations developed Crankcase Ventilation systems that are specifically important for the environment. The performance driven approach of Fleetguad offering both Open Crankcase Ventilation and Closed Crankcase Ventilation to manage crankcase blow-by of any diesel engine. Some benefits include reduced impact on environment, increased uptime, reduced consumption of oil, impactor doesn't require service. Proper Crankcase Ventilation system is specifically important for diesel and natural gas engines and is used almost in any application in North America. If you run a fleet please ask us about bulk purchase discount.