Mine is outside. Garage doors are too small. But I didn’t notice it until it got cold out so maybe it’s the low temps. Rain sense wipers never really worked well but I did just buy it a couple months ago.German engineers have always been this way.
For those with grease oozing down the windshield, I'm wondering if your trucks are parked inside or outside and whether your habits are to park them facing the sun. Solar heating might be at the root of this.