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 Jetta
Average mileage: 123,750 (99,000–173,000)
Engines affected: 1.8L 4 Cylinder, 2.0L 4 Cylinder, 4 Cylinder, 6 Cylinder
21 people reported this problem
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Coolant is leaking, needs to be refilled once or twice per month.
I have to add coolant every two weeks.
the car run hot when I stop at Red Lights, and drving slow. The water Pump, thermostat was replace.