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I have squeaky, graunchy pawls on my free hub. It's one of those halo supa drive ones with tiny little ridges on the pawls (which are new) and it's creaking loads so must need a touch of lube but what kind?
As the pawls and drive ring have such tiny ridges I'm pretty sure a grease will be bad and bind it up but I'm not sure and can't find any info on the distributors site so any info welcome before I tip a tin of 3 in 1 in there tomorrow.
I've used a touch of muc off wet lube before now (chain oil). Seemed to do the trick.
I’ve used diff oil for freehub pawls, works well. 75-90 Castrol Syntrax as I’ve got it left over after changing mine. It’s thick enough to hang around but thin enough so that it doesn’t clag things up. Syntrax is a bit expensive though so anything similar from a motor factors will do for a freehub.
I would check there isn't a crack in the axle if I were you. I had a halo hub, it made noise, greased many things and then one day the cassette fell off when I took the wheel out - the axle had snapped. The noise had been coming from a crack.
Worth checking - halo replaced it with a new improved stronger one.
No issue right now - but in 8 months or so (winter!): some grease gets very thick at low temperatures. Too much of this in the pawls and they will "stick"...
If you do your fork service you might have pm600 military grease. This stuff behaves very well at high and low temperatures. But still, on the pawls: don't "fill" the free hub with pm600. For the pawl "less" pm600 is better...