lube doesn't leak (except for when ya first put it on). I lube it just as much as before the chainglider (probably more than I need to). It keeps pants clean and free of rips. The back piece of mine fell off somewhere, but it still works fine. This winter, I rode my MTB with spikes and an open drivetrain quite a few days. I have torn pants to show for it. The chainglider is a great product. Once you have a chainguard, you wonder why any bike would be sold without one. A bike sans chainguard is like a car sans door. If I had to do it again and could find another product that would fit, I would buy a traditional chainguard instead of the chainglider. $46 is almost half of what I paid incl shipping. Its worth the $$$ to have a chainguard that fits my bike