only times i’ve got marks on RS stanchion is when i let the lower oil run dry first year i had rebas – left ring partly around stanchion from bush edge, always expected that to get worse after i started servicing properly but it never changed. and then, when some sharp grit got between wiper and stanchion that really f**ked them up.
other than these cases RS coatings (and bushes) do seem to last very well..
Never owned a Fox fork, too expensive, but if you really want long service intervals take a look at Pace?
Maybe if you have older Fox change to RS wipers, isn’t that what some shops do?
Though this looks like the coating just isn’t hard enough and/or it’s running dry against the bush.
Also:
No idea why most forks say to use damper oil in lowers.. fork oil is not particularly a lubricant?, try a fully synth motor oil like Mobil1 5w-30, clings to metal much better and shouldn’t damage rubber/plastic. This specifically was recommended to me by someone who should know what he’s doing..
Do Fox forks use foam rings? not sure, but might help keep lube up there.
That’s about all I can think of, but if yours already **** see how much Fox CSU cost, RS not worth it.