You may have been saying all of what I stated, but the length of this thread and all the school teachers here, I chose to skip to the point.
Not worth debating, would love to talk to the foolish German that came up with the 2 Bar cap. Maybe there was a reason, maybe they never spent anytime outside of the classroom and decided more is better, who knows?
But as I have said many times, most expansion tanks explode when a new owner gets their car, starts poking around under the hood and decides to top off the expansion tank like a domestic car.
Then shortly after they top off their expansion tank, they are then ready to replace it!