I actually ran that Dupont stuff a while back on my chain. I hated it. The chain felt stiff and gummed up after one ride.Well, I figured I'd give an update on my previous suggestion.
The first time I serviced my chain I used Maximum (sp?) Chain Wax and it did a very nice job, didn't sling off at all and didn't really build up much grime over 600 milles. On my second service I used the DuPont Teflon spray..... and after about 75 miles, my upshifts started feeling lurchy. I hadn't changed anything about my technique, so it kinda took me a minute to figure out what the problem could be. Well, this continued for another 100 miles and I decided to service the chain again. This time I used the DuPont stuff then followed it up with the Chain Wax. Put a couple hundred more miles on it to make sure the issue was resolved before I posted and sure enough, things were immediately back to being silky smooth again.
So, IMO: The DuPont stuff is good but for shorter intervals, unless you seal it with the wax spray. So really, just the chain wax is fine too. The main benefit of the DuPont stuff was that it dries completely clean, although as long as you let the wax set for a couple of hours it doesn't fling off either.