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.
Problems for specific Volkswagen Passat years:
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Newest reported 1995 Volkswagen Passat problems
Ignition wire breakdown is common, resulting in misfires.
Throttle body failure is not uncommon and can lead to shifting issues with the automatic transmission and other drivability concerns.
Reverse gear failures and noise in the manual transmission models are common.