I would be amazed if a different lube would have made any but miniscule difference to the OP's remarkably short lived 11th and 12th gears. 100.001 miles instead of 100 miles if it is truly remarkable chain lube? That goes along with cleaning too. This seems to scream mechanical or more likely, metallurgical, failure.View attachment 73258
The chain has not been modified - this is the as delivered length.
This is the link to the lube he recommended.View attachment 73259
I'm interested if anyone has used it?
Here is a nice review of it:
Review: NixFrixShun Ultimate Chain Lube
A first-person account of NixFrixShun’s Ultimate Chain Lube from Matt Butterman, after using it for two yearswww.handbuiltbicyclenews.com
The last line of the review: "My NFS Ultimate success story is a simple narrative that you’ll likely follow as well: buy the lube, apply it to your chain, go ride and forget about it. "
Hmmm. That would be the goal.