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Home >> Porsche >> 1981 >> 928 Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Crankcase Ventilation Systems >> Maintenance
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Crankcase Ventilation Systems: Maintenance

Inspect system operation and hoses every 30, 000 miles.

NOTE: For proper operation of crankcase ventilation system and engine it is important that oil filler cap and all connections be tight, not allowing the intake of any additional air.