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Free wheel oil #5182200 08/08/19 04:09 PM
Joined: Mar 2011
Posts: 12
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vortex Offline OP
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V
Joined: Mar 2011
Posts: 12
Not a free hub an old school freewheel. They call for medium weight oil. But what does that mean?

SAE20 ?

Gear OIL
75W90 ?
75W140 ?
85W140 ?

Currently running the heaviest 85W140 and t seems fine only drawback seems to be that it's way more silent than all the other bikes so people don't hear me coming the gear oil dampens all noise. Haven't really had the pawls slip and it seems to still not get stuck in winter -20C which is a relief but I never did figure out what they mean by medium weight oil.

SAE20 non detergent oil didn't seem to work that well I could hear some level of metal scraping noises and overall it was a bit loud vs the 85W140 that took all the noise away as soon as the freewheel was flooded with it.

85W140 seems to last around 2 years without needing a top off eventually you'll know you need a top off as the ticking noise becomes louder.

Re: Free wheel oil [Re: vortex] #5182280 08/08/19 05:51 PM
Joined: Dec 2016
Posts: 9,438
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Linctex Offline
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Originally Posted by vortex

Currently running the heaviest 85W140 and t seems fine only drawback seems to be that it's way more silent than all the other bikes so people don't hear me coming the gear oil dampens all noise. Haven't really had the pawls slip and it seems to still not get stuck in winter -20C which is a relief .


Sounds like you picked a winner


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Free wheel oil [Re: vortex] #5182464 08/08/19 09:37 PM
Joined: Apr 2012
Posts: 2,925
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buck91 Online Content
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Phil wood or your favorite gear oil. I like to flush with a light weight oil and then work in the heavy stuff. Apply a little extra and let it rest flat over night .


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Free wheel oil [Re: vortex] #5182549 08/09/19 02:29 AM
Joined: Feb 2015
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Kamele0N Offline
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Posts: 2,936
Chainsaw bar oil.....its sae30 + tackifiers...

Re: Free wheel oil [Re: vortex] #5182775 08/09/19 11:01 AM
Joined: Mar 2016
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CR94 Offline
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I've taken freewheels apart and packed the bearings and pawls with grease. Tedious, but lasts much longer than oil. I used to read warnings that that would cause pawls to fail to grip in cold weather, when the grease becomes too thick. However, I've never experienced that hypothetical trouble, using synthetic bearing grease.


2011 Toyota Prius now at 102K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
Re: Free wheel oil [Re: CR94] #5183075 08/09/19 06:29 PM
Joined: Apr 2012
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buck91 Online Content
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Joined: Apr 2012
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Originally Posted by CR94
I've taken freewheels apart and packed the bearings and pawls with grease. Tedious, but lasts much longer than oil. I used to read warnings that that would cause pawls to fail to grip in cold weather, when the grease becomes too thick. However, I've never experienced that hypothetical trouble, using synthetic bearing grease.



I do this with some higher end freehubs like DT. I do favor lighter greases, though. No issues with the DT Swiss grease and with Slick Honey. Never tried NLGI 2.


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Free wheel oil [Re: vortex] #5185809 08/13/19 10:38 AM
Joined: Dec 2006
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NYEngineer Offline
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I like Phil Wood.

Re: Free wheel oil [Re: vortex] #5199823 08/29/19 12:50 PM
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nthach Offline
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Phil Wood or Zip Spout oil, ATF even if you can't take it apart. If you can take it apart a thin grease can also be used.

Re: Free wheel oil [Re: vortex] #5199982 08/29/19 03:41 PM
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Lubener Offline
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SAE 20 or 30 weight would be fine. Not critical.

Last edited by Lubener; 08/29/19 03:42 PM.

The "thinking" man's friend.
Re: Free wheel oil [Re: CR94] #5210329 09/11/19 05:20 PM
Joined: Sep 2019
Posts: 3
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Stradbasher Offline
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Originally Posted by CR94
I've never experienced that hypothetical trouble, using synthetic bearing grease.


It's not hypothetical at all to those who ride in extreme cold.

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