A coolant leak may develop after oil filter replacement. The coolant o-ring seal can be damaged if the oil filter housing turns when removing or installing the oil filter. The recommended procedure is to hold the filter housing when tightening or loosening the oil filter.
Coolant Leak From Oil Filter Housing O-ring on Volkswagen Passat
Average mileage: (–)
Engine affected: 2.0L 4 Cylinder
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