I'm sure it's been addressed previously, but here goes anyway...
I bought my mountain bike about a month ago, and after three or four rides the showroom lube that was on the drivetrain had turned gummy. So, I busted out my 10-year-old kit of degreaser and lube and went to work. I used Pedro's Syn Lube on the chain, and it seems to stay wet and pick up a lot of dirt.
What are some recommendations on lube for dry, dusty conditions (pretty much the norm for Nor Cal summers). The LBS gave me a small bottle of Tri Flow, and I remember this stuff from way back, but if I remember correctly this stuff stays wet and picks up all kinds of stuff. What I want is something that will keep chain, cogs and chainrings shiny, not black!