ProGold Xtreme 4oz Chain Lube
Combining metal friction reducer technology with more persistent carriers. Xtreme is a chain lube formula for long-distance and extreme off-road conditions. MFR bonds to metal surfaces and resists build-up and tackiness, in addition to shedding water.
This lube is really a great product. I got a bottle of it for free when I got my new bike last year and once I figured out how to use it it became my favorite lube. To use it you have to first clean your chain, then apply it and let it dry for about 12 hours and reapply and let it dry for another 12 hours, then after EVERY ride you wipe the chain down with a clean rag and the chain will stay clean to the touch without a transfer of dirty greasy slime onto your fingers. The stuff not only lasts a long time before cleaning the chain and reapplying but it holds up to rain and the chain won't rust like wax base lubes will do.
Can't say I see a difference in performance between this stuff and the regular ProGold. That being said I love ProGold, and perhaps this stuff would make a difference in the right conditions.