Originally Posted by Jed19

You absolutely do not need Mavic or anybody's Mineral Oil to service the Mavic FTS-L freehubs. I use Mobil Synthetic 1 Oil 5W-20 and 10-W-30 on my cars, and the left-overs has always been good in oiling my FTS-L freehubs. I have the SSC-SL and the ES.

I suspect with the mileage you had on your freehubs, the issue could be the deterioration/erosion of fit of the white FTS-L bushing. That is the weak link in that design.

Could I also suggest you look at Shimano C24 carbon/aluminum wheels? They weigh less than the Mavic, and are better climbing wheels in my opinion.