Originally Posted by
Steve_sr
I see that Shimano is touting their bearing surface coatings and am wondering if ti is still necessary to lube FD and RD pivot points. I am speaking here about their higher end products like GRX 800 series and Ultegra road components.
It's an old habit, but I lube anything that has two surfaces moving against each other. As far as accumulating dirt, that's why you wipe clean the outsides of things.