About all the chain lubes and hype, here is my theory and experience, in short you don't really need chain lube.
1.) When I purchased my K9 new, first thing I did is clean all the factory grease off the chain, using Kerosine, no lube used the chain dry. Why? Dust and lube makes grinding paste, not for me.
2.) At around 3,800 miles my chain still needed no adjustment, in specification, but I changed the back tire and started using Dupont as it seemed not to dirty the chain.
3.) At 6,000 mile service, my chain was still in specification but at the lower end, I adjusted each adjuster less than 1/8th of a turn and we are good.
So, my personal theory is that the chain is lubed internally at the chain making factory and the key is to keep the O-Rings healthy and keep the chain dry. Anything that attracts dust will do more damage than no lubricant at all. Dupont keeps the O-Rings happy, all that I am interested in.
Prior experience:
For those who are not into competitive cycling (bicycling) note that on ultra light professional equipment a chain, rear cluster gears and front chain rings will set one back close to $800 as below. With competition we allow almost no chain stretch, otherwise we do a wheel change during a race and any wear will have unmatched components, resulting in skipping gears. On a titanium casette, expect less than 3,000 miles and for competition purposes (limited stretch) allow around 1,000 miles on a DRY chain and 600 miles on an oil/grease lubed chain. If cheaper heavier components are used one can get a lot more miles, provided the system stays matched, not changing individual drive components. The Pro's want the lightest stuff out there though.
In short, any lube that makes any dust stick to a chain, will reduce it's life, this is ultra light equipment that shows wear fast if not treated right, also there are no O-Rings.
Cycling gear train prices:
Rear Campagnolo cassette = $460
Chain = $70
Front chain rings = $240
Total = $770