Posted by Jeff Swanson on November 17, 2021 
As always, appreciate your posts Craig. (A retired trainmaster friend of mine was called to a minor derailment on a seldom used industrial spur. The first thing he did was stop at a gas station and pick up a couple quarts of oil to 'grease the wheels' for easier re-railing. Possibly the use here as well - for prevention of course - on tight curves?)
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