Autzone Brand Gear Oil?
Thread Starter
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Road Master
Joined: Jun 2008
Posts: 885
Likes: 3
From: Ledyard, CT
Autozone Brand Gear Oil?
Anyone try it? It's half the price of Mobil 1. Valvoline is between the two. All meet GL-5 specs supposedly. What could be different?
Sorry, typo in the title. Autozone.
Sorry, typo in the title. Autozone.
Thread Starter
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Road Master
Joined: Jun 2008
Posts: 885
Likes: 3
From: Ledyard, CT
I've always used gear oil in my transmission, 75W-90. I use 20W-50 oil for my engine. Gear oil is made for a transmission vs engine oil, it's made to better withstand the characteristics that fluid experiences. Note 20W-50 and 75W-90 are about the same viscosity.
I went with Mobil 1 since I've used that in the past and had no issues, plus I don't quite trust an Autozone brand fluid.
I went with Mobil 1 since I've used that in the past and had no issues, plus I don't quite trust an Autozone brand fluid.
Banned
Joined: Sep 2013
Posts: 1,127
Likes: 226
From: middle Tennessee
https://www.hdforums.com/forum/sport...-answered.html
Here is Red Lines official response -
Thank you for contacting Red Line Oil, in the shared Sportster primary/transmission the 75W90 is recommended, a product that has been used extensively and performs well.
The 75W90 is the product we have have used for a number of years with very good results in Sportster/Buell transmissions, matching the viscosity and type fluid called for.
The 80W Motorcycle Gear Oil is a lower viscosity than called for, the ShockProof gear oils can due to their unique characteristics could cause sticking of the Harley clutches.
The 75W90 would be preferred and recommended over 80W Motorcycle Gear Oil in these applications.
There can be issues with some GL-5 gear oils in certain applications. Some can be corrosive to brass, bronze or copper, not an issue with our GL-5 gear oils, they don’t cause corrosion, pitting or metal removal. In a synchro equipped transmission the friction modifiers contained in many gear oils can make them too slippery, though not the case in a motorcycle transmission with dog rings.
So if you want the right viscosity and dont want to worry about it damaging anything, go with Redline http://www.redlineoil.com/product.aspx?pid=133&pcid=4
Here is Red Lines official response -
Thank you for contacting Red Line Oil, in the shared Sportster primary/transmission the 75W90 is recommended, a product that has been used extensively and performs well.
The 75W90 is the product we have have used for a number of years with very good results in Sportster/Buell transmissions, matching the viscosity and type fluid called for.
The 80W Motorcycle Gear Oil is a lower viscosity than called for, the ShockProof gear oils can due to their unique characteristics could cause sticking of the Harley clutches.
The 75W90 would be preferred and recommended over 80W Motorcycle Gear Oil in these applications.
There can be issues with some GL-5 gear oils in certain applications. Some can be corrosive to brass, bronze or copper, not an issue with our GL-5 gear oils, they don’t cause corrosion, pitting or metal removal. In a synchro equipped transmission the friction modifiers contained in many gear oils can make them too slippery, though not the case in a motorcycle transmission with dog rings.
So if you want the right viscosity and dont want to worry about it damaging anything, go with Redline http://www.redlineoil.com/product.aspx?pid=133&pcid=4
Thread Starter
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Road Master
Joined: Jun 2008
Posts: 885
Likes: 3
From: Ledyard, CT
To each his own, but I really don't think I've come across anyone experiencing problems using 75W-90, in fact, most people that comment about going from 20W-50 to 75W-90 love it and never look back.
Club Member
Joined: Feb 2007
Posts: 16,320
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From: Boynton Beach, FloriDuh
While Harley says it's OK to use 20w-50 motor oil in the Sporty primary/tranny, Harley currently recommends their Sport-Trans oil for this application. Sport-Trans is an ~80 weight GEAR OIL.
Trending Topics
they don't sell sport trans fluid... and all models after 06 don't need it anyways... they use a Helical cut gears. they rec Syth3 for all models! WOULD I USE Synth3- NO WAY!!! I personally use 20-50 mobil1 or Amsoil
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Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
BTW, the advantage of using Gear Oil in the primary/tranny is its resistance to molecular shearing, which does occur with both straight and helical cut gears.
Last edited by cHarley; Jan 30, 2016 at 08:44 PM.
Banned
Joined: Sep 2013
Posts: 1,127
Likes: 226
From: middle Tennessee
I use Red Line 75W90 gear oil and am having great results with it. My clutch has a much more positive hook up. I plan to use this as long as I have my Sportster.
And I believe formula + is a gear oil.
http://www.bobistheoilguy.com/forums...on_-_Formula_+
And I believe formula + is a gear oil.
http://www.bobistheoilguy.com/forums...on_-_Formula_+
Last edited by hexnut; Jan 30, 2016 at 08:52 PM.