I know that Dupont's teflon chain lube, (the blue can), is a popular product. I am aware that some have switched to the newer product, (yellow can).
I would like to share what has happened with me and using the Dupont product, (blue can).
I have been using the teflon lube since mid-spring. I have been happy with it; primarly because there is no "after mess", (fling off), as can happen with other lubricants.
But lately, I have been having problems with my drive train. Just before leaving on my James Bay trip, I decided that I would change both sprockets and chain. They were about due, and once I left home for James Bay, at least another 3,000 miles was going to be added to the old hardware. So, I installed brand new sprockets and a new chain. I figured and hoped the symptoms I was hearing and feeling would go away.
I am about 4,500 miles into the new setup. I have ridden my bike enough to know when something isn't "right". I have been hearing funny "chirping" sounds from the chain at speeds of 40mph and up. I have also been feeling vibrations as well. The bike just felt like it was "pulling" hard; just not as smooth as it has been.
I do clean my chain with kerosene somewhat regularly. I also clean the sprockets and around the countersprocket shaft. What I missed was the chain guide mounted on the swingarm just aft of the countersprocket.
First I want to share a couple of photographs I took while removing the old sprockets and chain before my trip.
Here is a photo of the front sprocket with the customary "forward hook" to the worn teeth.
Notice the road grime on the outboard face of the sprocket. Also notice the flat spots on the bottom, or "inside face" of the chain.
Now, check out the "motor side" of the countersprocket.
A good 1/32" has been "machined" away by my chain. Improperly aligned chain? Nope, (be patient, I will explain.).
Here is another shot of the chain showing the flat spots. Notice the black "tar - like" substance at the end of each flat spot on the links.
This same very tough and hard substance was "imbedded" into the grooves of my chain guide. Sand and other road grit was also collected in this substance; effectively wearing down and polishing the inside face of the chain. The substance is hard enough to act as a chain guide itself; redirecting my chain into the face of the sprocket.
I have just under 60,000 miles on this bike in almost 3 seasons of riding. I believe I am on my 5th set of sprockets and chain. I have experimented with a host of different chain lubes. I have liked and have recommeded the Dupont lube up until now.
Have I used too much? Possibly.
I am not saying it is a bad product. But, if you do use it, I suggest being vigilant on how you use it and check the chain guide for build up.
I have a feeling that the heat of the chain may change the structure of the teflon to then take on another "personality" and perform in a manner that is counterproductive to its original use.
At work today, I cleaned the build up out of the chain guide grooves. I lubed the chain with some air-tool oil. I will be making the switch back to chainsaw bar oil. It's been the best solution for me so far out of all of the lubes I have tried.