Lube... your bike won't work for long without it, but it could very well be the most taken for granted product on the market. Most of the folks I ride with don't give the viscous fluid a second thought as they apply it to the drivetrain of their precious $5000 bikes. In this neck of the woods, lube choice is much less critical than the hot dusty terrain of SoCal, or wet, slimy soup of the shore. That doesn't make me any less picky about what I run on my babies.