My 240d has over 180k miles and has a fair cloud of smoke with the oil
filler cap removed. Last I checked all cylinders compression was
around 350. Oil, filters, injector cleaner, valve adjustment,
sustained hi way driving all played a part in better performance but
did nothing for blow by. I'm thinking about a ring job and wondering
what the general procedure is and what the possible scenarios are.
Best case, new cylinder liners, rings, timing chain or ?