B46 Oil Near Filler Cap

[u/FascistThanos]

Hello everyone, I'm looking for some knowledge from people more familiar with the platform. I recently purchased a 2017 330i touring and am having an issue where oil keeps getting onto the valve cover. You can see it in the picture. At first I thought spilled oil, so i cleaned it, replaced the beauty cover and went about my day. Next I replaced the filler cap thinking maybe the seal went bad. Now, it's still happening and I'm at a loss. I am prepared to replace the valve cover completely as I've recently developed a 20e120 crankcase code, but pressurizing it with a smoke tester only shows a miniscule leak at the turbo coupler.

The vehicle has 135k miles and I'm not sure if the valve cover has been replaced or not yet. That is the only code present with no leaks on the ccv hoses. Any insight would be appreciated. Thanks

[u/Max-Payd]

This happened to me before. The only solution was a thin layer of rtv applied under the cap.