"If it leaks it's in here" the subtitle says, although it's rainwater and not oil.
As mentioned in a previous post I'm searching for water ingress, we are having a lot of rain these days and I think I managed the heater-airinlet to be dry now.
Had a clogged roofdrain and blew it free with compressed air, now a new spot shows up in the right headlining corner.
I wonder where it comes from, can it be the roofrail? What are your experiences in this and is it easy to take off and check?