A key reason that people outside of the U.S. use enclosed chains. The entire drivetrain stays fairly clean, free from muck and so is highly reliable.
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City Bikes | LocalMile
We ride our bikes all year in all kinds of weather (we now live in MN, USA so get a lot of rain and snow). I just had to pull my rear wheel apart after 10 years to replace the tube and the chain was in great shape after a decade of riding and no maintenance. I wiped it down and re-oiled it. I should probably clean it more often but no need really.
A dutch Workcycles with fully enclosed drivetrain.