rob2388

Two days ago I took my 535i to get the oil filter gasket replaced, usually I do easy DIYs myself but I was moving and I didn't even had where to wash the car so, $400 at a local Indie seemed fair. (Leak was pretty bad, to the point that I noticed because of burned oil smell inside the cabin). Long story short, MAKE SURE YOUR OIL LEAK DIDN'T GET TO THE BELT! And just to be sure, I would replace the belt and clean everything anyway just to be safe. Next day after they replaced the gasket, my belt got destroyed and debris of the same went everywhere, INCLUDING inside the engine. Luckily it didn't do any damage to the valves etc., but still ended up paying $1900 more worth of repairs. I read online the same has happened to other people with less luck, and they have ended up either replacing the engine, or rebuilding it for a LOT of money. This is pretty scary stuff if you are out of warranty.

HPIA4v2

Mine was not as bad, replaced it last week.
I think the other gasket, the one that connect the filter housing to the engine, is fine.
Pressure wash the area and check the belt, mine is fine.
But the upper radiator hose seems to bulge out a bit from getting oil on it for sometime. I will add this item as a check item when you have your OFH gasket leak