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ATF in primary...WOW!

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Old May 20, 2022 | 12:43 PM
  #91  
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For those that point to ATF use in transfer cases and transmissions in cars and trucks; the automotive industry was plagued with failures in transfer cases and manual transmissions resulting from too thin lubes being used. They decided to switch rather than fight widespread ineptitude. Decades ago most equipment was designed with ATF in mind. This was accomplished by using wider wear surfaces to reduce the loads to a level that ATF could handle.
 
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Old May 20, 2022 | 05:43 PM
  #92  
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Here's another hat in the ring:
Shell Rotella T-6. It's a 5W-40 oil, full synthetic, reasonably priced, available at any Wal*Mart, an it carries the JASO-MA rating for wet clutches.
 
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Old May 21, 2022 | 06:23 PM
  #93  
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Originally Posted by Grendel4
The viscosity in ATF generally is too low to recommend for using in the primary case.
We started running ATF in the Shovels when we sealed up the primary cases
I have a 03 Road King with 235K miles on it - most of that with ATF in the primary - original chain & adjuster shoe - the only things I've replaced in there is the clutch plates - once at 150 K & the stator & rotor - a couple times
 
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Old May 22, 2022 | 08:43 PM
  #94  
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I must say this thread has a lot of wisdom on both sides of the discussion....
 
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Old May 24, 2022 | 09:33 PM
  #95  
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https://www.amsoil.com/p/super-shift...d-sae-10w-art/
Formulated for High-Horsepower, High-Torque Applications
AMSOIL Super Shift Synthetic Racing Transmission Fluid resists extreme heat to virtually eliminate slippage and improve shift performance while protecting against wear, helping racers improve on the track and save money in the garage.

I use it to combat the heat while gaining the grab of the Barnett extra clutch plate clutch pack.
Two seasons, very happy.
 
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Old May 28, 2022 | 11:32 PM
  #96  
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I've tried ATF in the primary, and while I did like the feel of the clutch, I saw too much particulate being generated.
 
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Old May 29, 2022 | 05:12 AM
  #97  
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Originally Posted by stilup
https://www.amsoil.com/p/super-shift...d-sae-10w-art/
Formulated for High-Horsepower, High-Torque Applications
AMSOIL Super Shift Synthetic Racing Transmission Fluid resists extreme heat to virtually eliminate slippage and improve shift performance while protecting against wear, helping racers improve on the track and save money in the garage.

I use it to combat the heat while gaining the grab of the Barnett extra clutch plate clutch pack.
Two seasons, very happy.
You were using the transmission fluid in your primary? Anybody used the Amsoil Primary fluid?
 
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Old May 29, 2022 | 06:00 AM
  #98  
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Originally Posted by Hammerhead Pat
Anybody used the Amsoil Primary fluid?
Yes , I've used it - works fine
 
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Old May 29, 2022 | 06:24 AM
  #99  
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Originally Posted by Eastcoast Jim
Yes , I've used it - works fine
Thx! Got a set of the etxra plate clutches ready to go in and am going to try that fluid.
 
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Old Aug 16, 2024 | 08:32 PM
  #100  
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Default atf in primary case

atf in primary/ What is in a modern front wheel drive transmission in a car? Hyvo type chains, clutch packs. Whats in a primary? Hyvo type chains and clutch/ I change it every other oil change. packs. I have been riding Harleys since 1988 and have used ATF in all of the primary cases. Easier shifting and finding neutral. Also a nicer clutch engagement.
 
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