It is easy to change oil on VW

not need to buy 導油工具. Just push in the orange color piece on filter housing. the dirty oil will drain out. Therefore, you would NOT touch the dirty oil when you dismount the housing. Some japanese car start to use this design. It is a good solution for bottom mount oil filter. Otherwise the dirty oil is spilled everywhere when you dismount the regular type bottom (or side) mounted filter. (top mounted filter is different. It is not good to engine).

Where did you buy MANN filter? I used to buy K&N and it sounds better than MANN.