Century Estate Wagon V6-260 4.3L DSL (1984)
Positive Crankcase Ventilation: Service and Repair
DIESEL ENGINES
Clean valve cover filter assemblies, ventilation pipes and connecting tube every 15,000 miles. Inspect rubber fittings and replace as necessary, or
every 15,000 miles. On L-4 engines, inspect and service PCV valve every 15,000 miles. On V6 and V8 engines, replace breather cap assemblies every
30,000 miles.
