Jyrki:
For your technical english, you did a great job of describing the principles of the ABC engine. On other forums on this site, the ABC thing has been very well covered so I never did go into detail of the metalurgy behind why a hot break in is beneficial.

You mention castor oil, yes, it develops a varnish that is actually an excellent lubricant at operating tempreture. I will always be a firm believer in at least some castor oil in a fuel used for ABC engines, especially car engines.