I recently picked up a bike that the previous owner had left unused in their shed for a couple of years. The only mechanical issue was that the bearings of the freehub body were completely rusted and seized. so when I replaced that I took the precaution of using molybdenum disulfide grease for the pawls. I was amazed by how smoothly it ran with that grease, so much so that I cleaned and regressed my other bikes too. the rear wheels now spin more freely, engage instantly and are almost silent.
has anyone else used moly grease for freehubs? is there any risk with it?
by areeighty
5 Comments
“Re-greased” not “regressed”. Thank you autocorrect
I’m glad it worked for you. I have mostly settled on moly marine grease because it’s plastic safe. That said, I’m no expert and probably wrong – like most of the internet.
I used car CV joint molygrease in my rear wheel bearings (cup and cone). Five years later, still as good as new.
I use it on my Fulcrum Freehub and it still runs like new. It’s also great for the hard German winters
The only potential issue with grease in freehub is that the pawls will fail to engage properly when paired with certain designs. Hence the common advice to use oil or special low-viscosity grease for freehubs.
IMO this is likely due to variances in spring tension between hubs. Weaker pawl springs may not be able to handle standard NLGI #2 grease, but I have yet to actually encounter this with any wheel I’ve serviced.