The problem with the leak was that we barely couldn't breath in the car, so really, it was becoming a problem. Captains JM en Snef opened one last time the engine and found what had to be found: the leak. We tried to fix it with things we found in the JM's father's closet, and halleluia, it worked!
Captain U'Roon drove more than 200km with it, and things seem OK now.
...it 'll just have to hold on for another 7000km.
Tomorrow around noon, Team Unagi sets off to Copenhagen.
Next entry is one from the road.