View Poll Results: A poll
Voters: 5066. You may not vote on this poll
What Primary Oil is your Choice
Seasoned HDF Member
Joined: Apr 2010
Posts: 33,714
Likes: 3,723
From: Connecticut.
the problem with a 50 w is the thickness...it has an adverse effect on cold starts....But I live where it's cold so it may not be the case where you are......by adverse I mean it relies on the chain to throw the oil in the primary case and an oil behaving like syrup can't be good.....jmho.
6th Gear
Joined: Apr 2021
Posts: 14
Likes: 0
From: SP - Săo Paulo
the problem with a 50 w is the thickness...it has an adverse effect on cold starts....But I live where it's cold so it may not be the case where you are......by adverse I mean it relies on the chain to throw the oil in the primary case and an oil behaving like syrup can't be good.....jmho.
Seasoned HDF Member
Joined: Apr 2010
Posts: 33,714
Likes: 3,723
From: Connecticut.
Stellar HDF Member
Joined: May 2015
Posts: 2,091
Likes: 304
From: mid Michigan
https://www.familyfarmandhome.com/lu...l-t191644.html
My new primary oil, 30 weight is perfect and at this price can change it a lot. Put this in truck 4x4 transfer case too. I can pick it up about 5 miles from my house, any 30 works good even 10-30 from the cheapest to amsoil. I have no problems with any of them slipping on my 150,000 mile clutch. some might have problems with friction modifiers in higher horse power bikes. that oil above I would think would be great any primary, not to thin or thick just right.
My new primary oil, 30 weight is perfect and at this price can change it a lot. Put this in truck 4x4 transfer case too. I can pick it up about 5 miles from my house, any 30 works good even 10-30 from the cheapest to amsoil. I have no problems with any of them slipping on my 150,000 mile clutch. some might have problems with friction modifiers in higher horse power bikes. that oil above I would think would be great any primary, not to thin or thick just right.
Seasoned HDF Member
Joined: Apr 2010
Posts: 33,714
Likes: 3,723
From: Connecticut.
https://www.familyfarmandhome.com/lu...l-t191644.html
My new primary oil, 30 weight is perfect and at this price can change it a lot. Put this in truck 4x4 transfer case too. I can pick it up about 5 miles from my house, any 30 works good even 10-30 from the cheapest to amsoil. I have no problems with any of them slipping on my 150,000 mile clutch. some might have problems with friction modifiers in higher horse power bikes. that oil above I would think would be great any primary, not to thin or thick just right.
My new primary oil, 30 weight is perfect and at this price can change it a lot. Put this in truck 4x4 transfer case too. I can pick it up about 5 miles from my house, any 30 works good even 10-30 from the cheapest to amsoil. I have no problems with any of them slipping on my 150,000 mile clutch. some might have problems with friction modifiers in higher horse power bikes. that oil above I would think would be great any primary, not to thin or thick just right.
Seasoned HDF Member
Joined: Apr 2010
Posts: 33,714
Likes: 3,723
From: Connecticut.
it would be a catastrophe if the primary had none, but really, the best oil is the one that can help you find neutral AND lube everything else. ....redline does this nicely.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Was hoping to find some constructive advice...
I've decided to switch from Syn3 in all three holes on my Stage II bikes. I'm looking at these choices, in this order, for the primary:
I've decided to switch from Syn3 in all three holes on my Stage II bikes. I'm looking at these choices, in this order, for the primary:
- Bel-Ray Primary Chaincase Lube
- Spectro Heavy Duty Primary Chaincase Oil
- Red Line V-Twin Primary Case Oil
- AmsOil Synthetic V-Twin Primary Fluid