2016 primary change
Thread Starter
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1st Gear
Joined: Oct 2023
Posts: 5
Likes: 1
From: Oklahoma
2016 primary change
I was told to put 38oz into the primary on my street glide....i put 38oz of 80w-140 syn3(of which the dealership says is the new better oil,smh) and about 2 oz came out..should I redrain it and start over? Should it take less since it's thicker? Idk, just want a safe bike... Or just make sure it doesn't go over the pressure plate? Heelllpp 🙄
Seasoned HDF Member
Joined: Jun 2017
Posts: 5,315
Likes: 4,272
From: Granville New York
Hopefully you didn't put an 80w oil in the primary. Your next thread will be " I just changed my oil and now i can't find neutral ". If you're using HD brand then put their formula + in the primary.
Seasoned HDF Member
Joined: May 2018
Posts: 5,814
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From: Las Vegas
A lot of us use the HD 80w140 gear oil in the primary. It works fantastic.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,143
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From: San Diego, CA
I was told to put 38oz into the primary on my street glide....i put 38oz of 80w-140 syn3(of which the dealership says is the new better oil,smh) and about 2 oz came out..should I redrain it and start over? Should it take less since it's thicker? Idk, just want a safe bike... Or just make sure it doesn't go over the pressure plate? Heelllpp 🙄
If 2 oz. came out when it was filled with the bike upright, you have it way overfilled......
Hold the bike upright, or put it in a wheel chock, do not check/fill it on the jiffy stand.
Regardless of primary size (standard v Narrow or Touring v Softail), or oil weight, the above diagram from dawg shows how much to fill it...
Just to put the oil weights used between engine oils and gear oils in perspective, and to see how they compare ... look at the chart below...
It shows the HD Formula 1, which is an SAE50 GL-1 conventional oil, compares closely to the HD heavy synthetic SAE80w-140 gear oil... The comparison holds true to other makes of comparably weighted conventional oils to gear oils...
Last edited by hattitude; Oct 15, 2023 at 05:54 PM.
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Joined: Mar 2010
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From: Honah Lee
See you got your answer and only as a suggestion, primary is better off with non detergent gear oil since there is no filter. Harley's Formula+ works best year round.
And Welcome, hope you enjoy your ride here. And again as a suggestion, make your next new post over in the new member welcome area to say hello.
And Welcome, hope you enjoy your ride here. And again as a suggestion, make your next new post over in the new member welcome area to say hello.
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Thread Starter
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1st Gear
Joined: Oct 2023
Posts: 5
Likes: 1
From: Oklahoma
2oz overflowed...it was on jiffy...leveled it and added more
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,496
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From: Pennsylvania
Please step away from your motorcycle; let someone who can read the service manual or use advice given above in the diagram work on your motorcycle.
