Hello, I noticed the last thing between the cylinder head and engine block in the corner back right oil leaks. In addition, the cooling water flanges on the block are chronically leaking (have already tried with a new seal, flange and surface seal of Loctite). I have now made my decision at the beginning of January at home in the garage the head seal, VSD, timing belts (then due anyway) and to seal the cooling water flanges respectively to change. I would like to know from you how I best v How can I grind the block in the best way, and do I have to drain something under the car except oil? My next oil change is then also in January, which is why it meets very well. Would you be very grateful for some tips and advice. MfG Martin