Sumping issue wtf is that
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Stage III
Joined: Aug 2020
Posts: 3
Likes: 0
From: monroe north Carolina
Sumping issue wtf is that
I have a 18 road glide that I just boight and has 3000 miles on it. My old bike a 10 heritage i used ATF oil in my primary like a good friend of mine said to do and man that was the stuff the bees knees. Worked so much better than the 20-50 that was in there. So was wondering can I do that with an m8 or with this summing crap I keep hearing about is that a bad idea. Any thoughts. Thanks guys and lady's
Last edited by deadhead420; Aug 6, 2020 at 03:19 AM.
Thread Starter
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Stage III
Joined: Aug 2020
Posts: 3
Likes: 0
From: monroe north Carolina
So the tyranny and primary have completely separate tanks on the m8. I've just been hearing that the tranny fluid will go to the primary and vise versa. I just dont want ATF fluid to wind up in my tranny as well as tranny fluid mixing with the ATF fluid in the primary
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
The tranny and primary are totally separate on twin cams too. ATF works great in the primary. Excellent clutch hookup. No stiction.
50wt oil is way too thick for the primary. People who run 20w50 in all 3 holes are just too lazy to put the proper fluid in the proper hole.
50wt oil is way too thick for the primary. People who run 20w50 in all 3 holes are just too lazy to put the proper fluid in the proper hole.
Last edited by 60Gunner; Aug 6, 2020 at 07:05 AM.
Thread Starter
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Stage III
Joined: Aug 2020
Posts: 3
Likes: 0
From: monroe north Carolina
Thanks my man. Thats what I've been told for years but then I started to hear horror storys about tyranny fluid migrating to the primary so I just wanted to make sure. Have a great day man and ride safe
Seasoned HDF Member
Joined: Jun 2017
Posts: 5,315
Likes: 4,272
From: Granville New York
So the tyranny and primary have completely separate tanks on the m8. I've just been hearing that the tranny fluid will go to the primary and vise versa. I just dont want ATF fluid to wind up in my tranny as well as tranny fluid mixing with the ATF fluid in the primary
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
^What he said^. Sumping is a totally different issue.
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Cruiser
Joined: Jun 2010
Posts: 237
Likes: 25
From: St Louis
I would love to see what a Primary dipstick looks like too
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