The 8500 has had it's share of problems already...hour hand synchronization problems, DLC coated barrel problems, and premature pivot wear on the balance staff on the anti-magnetic versions. The fact is that all movements go through these growing pains, so a Rolex 3135 made back in 1988 won't be the same as one made recently, so all brands make subtle changes over time to address problems that crop up.
It's way too early to say if the 8500 will be reliable long term, but in terms of increased service intervals, that is really just a marketing thing. There's a lot more to a watch than just an escapement, and no matter how maintenance free you make one parts of the watch, the other parts still need attention like they always did.
Cheers, Al
Click to expand...