My $.01: I went mountain bikin' with a freshly "lubricated" dry wax type chain lube. I like the manufacturer, so they shall remain nameless. Conditions were indeed dry, high summer in California, moon dust coats nearly everything below the top tube after each ride. I turned around and went home after 45 minutes of riding, the loud grinding sound of a dry dusty drivetrain was too much for me to tolerate. I like Boeshield, put it on the night before riding and no fling off will occur. NFS is $16 for 2 ounces, it looks interesting but that's too much (for me) when you can get a decent new chain for $23.