[raed_jan]

There's a marking on the fleece filter outer wall as the manufacturer is suggesting to lube the filter opening and to push until the marking is flush with the filter mount thread lip (PUSH and not twist, REPEAT, not twist, as you may destroy the tissue of the filter)

Failing to make the marking meet the thread lip will cause such leakage

 

[raed_jan]

gregs210, It's like you were watching me while I was doing my last oil/filter change

 

[raed_jan]

Mod, can we change the forum's name to "CSI 210"...

Yes the flow patterns on the filter housing makes sense but the cleanup+baby powder on the filter housing, the chain check cover will tell for sure where was the culpret
With all the gunk lying around, how can you tell where the leak is/was