- You can leave the stiffening plate out of the car, but make sure you tighten the 16-mm bolts that hold the sway bar. save the other bolts to re-install later.
- Then clean the engine with rag, Purple power and water etc.
Now the engine is clean, you can monitor oil leak daily.
I wrote the detail here:
https://xoutpost.com/bmw-sav-forums/...se-fluids.html