A coolant leak may develop after oil filter replacement. When tightening or loosening the oil filter the filter housing may turn damaging the coolant o-ring seal. 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 Golf
Average mileage: 133,350 (126,700–140,000)
Engine affected: 2.0L 4 Cylinder
16 people reported this problem
2003 Volkswagen Golf - 2.0L 4 Cylinder 140,000 mi, Visitor
it still needs to be fixed