Crankcase Ventilation Systems: Maintenance: Gasoline

Once every 2 years or every 30, 000 miles, the positive crankcase ventilation system should be serviced. Perform this maintenance more frequently if vehicle is operated in dusty conditions.

Fig 1: Datsun Crankcase Ventilation System (Carbureted Models)

Courtesy of NISSAN NORTH AMERICA, INC.

Fig 2: Datsun Crankcase Ventilation System (Diesel 810 Models)

Courtesy of NISSAN NORTH AMERICA, INC.