My cousin noticed this when he had my car on the lift this morning, as you can see the first pic is taken facing the rear of the car and the thing is around the back of the engine.
Looks like battery acid, but its not a crystalization of some sort. Had more of a rubbery texture to it and it didnt come of at all when I touched it, not sticky and more like dried glue. I remember seeing something similiar when I was looking underneath the seats searching for the infamous rust.
Car is a 328i F31 and itīs got the power seats, any info is appreciated
