Keep using SYN 3 in primary and Trans?
Ultimate HDF Member
Joined: Feb 2008
Posts: 5,615
Likes: 9
From: Escondido, CA
Even Harley doesn't recomend the syn3 in the primary or tranny. It hasn't come in the SE models for a few years now. They sent a service announcement to all the dealers a few years ago to stop using it in the primary and tranny. Pick something else.
Road Master
Joined: Apr 2009
Posts: 1,205
Likes: 3
From: Mebane, NC
I didn't know that. Did they say all synthetics or just Syn3 and do you know why? I ues Amsoil products in mine but I would be curious to know why they quit recommending Syn3.
Road Warrior
Joined: May 2009
Posts: 1,825
Likes: 15
Amsoil in motor,redline in trans ,drag specialties in primary.Harley says you can use syn 3 in all holes.I think it Shifts better with redline in trans.
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Tourer
Joined: Nov 2009
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From: Old Hickory TN
Man, that Bulldog must follow you around all the time!!
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Ultimate HDF Member
Joined: Feb 2008
Posts: 5,615
Likes: 9
From: Escondido, CA
They didn't say. They only said to use gear oil in the tranny and primary lube in the primary. The bike will shift much better with gear oil. I'm sure they don't want to admit any mistake in their early recomendations for the syn 3. What I find kind of odd is that on their website and in the catalog they say that syn3 is good in all three holes but in their service bulletin they said don't do it. And they quit putting it in the SE bikes when the bulletin came out.
Road Master
Joined: Apr 2009
Posts: 1,205
Likes: 3
From: Mebane, NC
They didn't say. They only said to use gear oil in the tranny and primary lube in the primary. The bike will shift much better with gear oil. I'm sure they don't want to admit any mistake in their early recomendations for the syn 3. What I find kind of odd is that on their website and in the catalog they say that syn3 is good in all three holes but in their service bulletin they said don't do it. And they quit putting it in the SE bikes when the bulletin came out.