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  #1  
Old 01-02-2022, 09:25 AM
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jcarne jcarne is offline
 
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Default Aeroshell 5 out of production?

Soooo... anyone know if this stuff is out of production? Spruce has an indefinitely back order and I can't find it in stock just about anywhere. Would really like to lube my Hartzell with it and not #6.
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  #2  
Old 01-02-2022, 09:27 AM
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Quote:
Originally Posted by jcarne View Post
Soooo... anyone know if this stuff is out of production? Spruce has an indefinitely back order and I can't find it in stock just about anywhere. Would really like to lube my Hartzell with it and not #6.
I dropped an email to Hartzell asking for advice last week, but probably won't hear from them for a few days. There must be some grease that is compatible.
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  #3  
Old 01-02-2022, 09:36 AM
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Aeroshell 22 might work. Check the MSDS's
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  #4  
Old 01-02-2022, 09:48 AM
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I wont use Aeroshell 5 in my mower let alone an airplane. I have dried up old stock tubes tubes that I've thrown in the trash. Greasing Hartzells ever year causes more problems than it prevents. Pushing fresh grease in increases the likelihood of separated oil getting past the teflons and big orings. Radial movement is less than 1/8" at the bearing balls so its impossible for fresh grease to make its way to the interface between the bearing balls and the races.
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N9187P PA-24-260B Comanche, flying
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  #5  
Old 01-02-2022, 10:08 AM
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Quote:
Originally Posted by rocketbob View Post
I wont use Aeroshell 5 in my mower let alone an airplane. I have dried up old stock tubes tubes that I've thrown in the trash. Greasing Hartzells ever year causes more problems than it prevents. Pushing fresh grease in increases the likelihood of separated oil getting past the teflons and big orings. Radial movement is less than 1/8" at the bearing balls so its impossible for fresh grease to make its way to the interface between the bearing balls and the races.
Bob, do you have a recommendation? Thanks.
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  #6  
Old 01-02-2022, 10:09 AM
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Quote:
Originally Posted by rv8ch View Post
Bob, do you have a recommendation? Thanks.
Yes, dont grease. Its pointless. There's no way to force old grease out without complete disassembly. There is so little movement that none of it really matters. I would be willing to bet a Hartzell would work just fine with zero grease.
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N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
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  #7  
Old 01-02-2022, 10:24 AM
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Quote:
Originally Posted by jcarne View Post
Soooo... anyone know if this stuff is out of production?
If so, good riddance.
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  #8  
Old 01-02-2022, 10:58 AM
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Quote:
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If so, good riddance.
Care to elaborate Dan? I haven't been around the block nearly as long as you guys.
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  #9  
Old 01-02-2022, 11:22 AM
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Quote:
Originally Posted by DanH View Post
If so, good riddance.
I'm sure there's a ton of data behind that sentiment...
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  #10  
Old 01-02-2022, 11:28 AM
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Quote:
Originally Posted by rocketbob View Post
There's no way to force old grease out without complete disassembly.
Sort of -- when the mineral oil separates from the paraffin, it has a nasty tendency of seeping past the blade root seals and into the slip stream; ending up on the windscreen, airframe...(sigh) the chunky paraffin is left behind.

Disgusting "pimple popper" pictures attached for reference.

edit: this is Aeroshell 6 after only 6 months of disuse. (airplane was down for paint...)
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