Great oil with top-quality performance. My bike runs smoother with this oil than with any other brand I’ve used. Even after long rides on hot days, the engine stays quiet and I don’t get the ticking noise from heat that I experienced with other oils. I’ll continue using this oil for the life of this bike and any future bikes I own.
Again have used the Harley SYN oil in for years.. I have a 2012 Road Glide and made the change.. Engine quieter.. more oil pressure and runs great.. And a better price as we’ll.. A NO brainer ….
I got this for my recently purchased 2012 HD VROD. I've heard good things about this oil for V-Twins, so I'm looking forward to trying it out. The service was great as well - everything was well packed and arrived quickly.
Best oils I’ve used in my 04 fatboy. I’ve used it exclusively in this bike since I got it. Every oil change. Okay, so I got this bike for my birthday 11 months ago from my daughter and this is only the second oil change, but still.
Been using Amsoil for over twenty five years. Insides of the motors looks new.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Engine oil
By 
JOE, 
a 
Verified Buyer 
on 
April 29, 2026
I run this on my 16 Fatboy lo s with a 110 screaming eagle and I really love it
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Noticeably quieter heads
By 
RICHARD, 
a 
Verified Buyer 
from 
Los Angeles, CA. 
on 
April 29, 2026
I have the Figurati Designs magnetic dipsticks on my 2022 road king special. Im at my 2nd fluid change with Amspil, away from Syn3, there is noticeably less debris on my dipstick magnet this 2nd time around. Perhaps its because the engine runs alittle cooler (FP4 gauges on my phone mounted on the handlbars) or the sheer strength is much better, I don't know but its damn near clean after 1000 miles. On my first ride, after switching over the first thing I noticed was I couldn't hear the metal ticking noises at a red light anymore. So that's interesting. Im assuming theres better metal adhesion.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
First 1k Oil Change 2025 FLHXU
By 
JAVI, 
a 
Verified Buyer 
from 
San Antonio  
on 
April 28, 2026
First 3 hole change on a new bike. Wanted the best for my bike and ordered this online. Wish Amsoil was sold in stores but overall very happy with the performance in the 1k miles since. Neutral easy to find , bike runs great. Real test will be with the temps in the 100s.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great Synthetic Oil For Indian
By 
DENNIS, 
a 
Verified Buyer 
from 
Prescott Valley, AZ 
on 
April 28, 2026
Was looking for a good full synthetic alternative to the semi-synthetic Indian oil for my RoadMaster. This is it. Shifts smoother and seems to run cooler. Recommend!!!
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