Solberg Manufacturing was contacted to provide a closed crankcase ventilation system for a new Mitsubishi S16R-Y3MPTAW engine being installed on a marine vessel. They designed a complete kit that included intake air cleaners, a high-efficiency coalescing filter, hoses, brackets, and gauges to maintain slight underpressure in the crankcase and remove oil mist from the crankcase blow-by. The self-adjusting system will ensure the underpressure level remains within the set range as the air cleaners get dirtier over time.