I've tried a number of chain lubes. Dumonde is by far my favorite. Now I can clean and re-lube every 3-5 rides. Instead of every other.
I tried this lube simply because I had read and heard that it reduces noise from the drive train. My old lube worked well as a lube but the Dura Ace 10 drive train was pretty noisy with it, much more so than I thought such a quality component should be.
This stuff works as well as I had hoped. I started with Dumonde Lite when I changed to a new chain. It was immediately quieter than the old lube by a noticeable degree and got better until about the third oiling. Instead of the low grinding noise I previously heard while pedaling along now, it is more of a subtle hum.
I have tried a number of different lubes over the years including wax lubes (hate them), oil based lubes and synthetic lubes. Except for the wax lubes they were all kind of serviceable as lubricants but this one works well both as a lubricant and a drive train noise dampener. It quiets the drivetrain noise much better than anything I have tried. I like it a lot and won't go back to the old lubes. We have now switched to Dumonde Lite for all four road bikes that my wife and I own.
I highly recommend it for road bike use.
I have been using Dumonde for about 8 years. I have never found a better lube. This stuff keeps the chain quiet and shifting regardless of conditions. Stream crossings and rain do not wash it off. Cleaning your bike with soap and water will not remove the lube.
I use the original on both mountain and road bikes. The key is to clean your chain as recommended, coat every link, ride a bit, then wipe off everything, chain and chain rings. Once a base is established, this stuff lasts. I find that I re-apply about every 300 miles, rain or dry.
I received this as a gift from my sister in law last Christmas. My brother and her being competitive racerriders in Southern California I thought this lube would not hold up in the Pacific Northwest. I was thinking this stuff is desert lube and it would wash away after one puddle! I was so wrong, this stuff is as advertise, sticks to the chain in all conditions and some of the cleanest lube I have ever used. Cross and MTB for me and after riding through what would have other lubes buckling and your drive train sounding like a nest of squealing sparrows this stuff is still going strong, quit as ever. I seriously think this is alien technology, but whatever it is I am hooked and I hope she gets me more this Christmas.
