Mind the black
In the flow: Our spin-on oil filters OC 593/3 and OC 593/4 for VW 1.2 and 1.4 TSI engines have a seal on the filter that fully closes off the antidrain back plate when screwed into position.
The drain only opens when the filter is loosened during an oil change: the remaining engine oil then flows into the oil pan and can be disposed of. But keep your eyes peeled: the old sealing ring can stick to the flange, and because the used oil is black, the ring can be hard to see. As a result, leaks can occur and the oil pressure indicator can light up when the engine is running, even though the new filter is properly screwed on.
Down to the last residue
Take it slow: When you remove the used filter, the remaining oil in the filter and flange flows back into the oil pan through the antidrain back plate. This takes time. If you rush this step in the process, you’ll get ahead of the residual oil, so to speak. This can cause used oil to spill over the flange, resulting in contamination.