Thanks for your replies - this is bothering me. I bought the Volvo with the plan of a long keeper, I maintain my cars and since I bought my first in 1976, I've had only 8, including my wife's.
I changed to full synthetic at the first service interval after purchase in 2014, at the recommendation of the dealer.
Since, I believe, Volvo replaces free any part replaced after purchase, if this breather box goes bad again, they would fix it free (a question to them).
Since my CPO ends this Spring, it will be before the next interval, which will be the end of the current oil consumption monitoring. In other words, I will be out of the CPO before the test is completed.
I'm thinking I should talk to the General Mgr of the dealer about all this, to determine what Volvo will do given certain possible turn of events, from excessive oil consumption to repeated need to replace the breather box, all after the CPO ends.
Am I thinking about this in the right way?
One more thing about me - I've been successful in the business I'm in by being honest with both suppliers and clients, so I'm inclined to avoid secret strategies in favor of putting cards on the table but keeping vigilant. (Trust but verify, I think he said.) Is this a good approach with the current Volvo organization?