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AMSOIL Synthetic vs Harley Davidson Motor Oils: Which one truly protects your engine?
If you ride a Harley, you already know the importance of using a reliable oil. But not all oils are created equal.
After over 20 years of testing different brands, I’ve consistently found AMSOIL V‑Twin Synthetic Motorcycle Oil to outperform Harley-Davidson’s Genuine Motor Oil, in both lab results and real-world riding.
Let’s break down why.
| Feature | AMSOIL Synthetic Motorcycle Oil | Harley-Davidson Motor Oil |
|---|---|---|
| Base Oil Type | Full Synthetic | Semi-Synthetic / Conventional Blend |
| Engine Wear Protection | Superior (Independent Tests) | Moderate |
| Wet Clutch Compatibility | 100% JASO MA2 Certified | Compatible |
| Drain Interval | Up to 20,000 miles or 1 year | Typically 5,000 miles |
| Price | Wholesale with AMSOIL Membership | Higher MSRP, Fewer Perks |
Here key features that set AMSOIL apart from Harley…
1. True Synthetic vs Semi-Synthetic
AMSOIL V‑Twin oil is made from Group IV (PAO) base oils, real synthetics. Harley-Davidson oil is Group III, which is refined petroleum. This means AMSOIL holds up better under heat and load.
“I live in Arizona, where summer temps easily hit 110°F. AMSOIL keeps my engine running cool and clean even on long rides.” — A satisfied rider
2. Longer Oil Life Saves You Money
While Harley recommends oil changes every 2,500 to 5,000 miles, AMSOIL is engineered to go up to 10,000 miles between changes (or one year). That’s less time in the garage and more time riding.
3. Shear Stability You Can Count On
Motorcycle oils are punished by the transmission gears. AMSOIL retains its viscosity far longer, thanks to its robust molecular structure. This ensures smooth shifting and clutch protection.
4. Wet Clutch Compatibility (JASO MA2 Certified)
Many Harley riders worry about slipping clutches when switching oils. AMSOIL is fully wet clutch compatible, meeting JASO MA2 standards, ideal for Harleys, Indians, and other V‑Twins.
5. Proven in Independent Testing
In standardized ASTM tests and real-world dyno simulations, AMSOIL consistently shows:
If you’re riding hard, touring long, or just love your bike, these things matter.
If your answer is yes, AMSOIL is the obvious winner.
I switched to AMSOIL after using Harley oil for years. Smoother shifting, cooler engine, and longer intervals—worth every penny.” — Harley Owner, Michigan
Q: Can I use AMSOIL in my Harley’s wet clutch?
Yes. AMSOIL V‑Twin Synthetic Motorcycle Oil is JASO MA2 certified and 100% wet clutch safe.
Q: How often should I change AMSOIL motorcycle oil?
Once a year or every 10,000 miles, whichever comes first.
Q: Is AMSOIL better than Harley-Davidson oil?
In lab tests and real-world performance, yes. It uses higher-grade synthetics, lasts longer, and offers stronger protection.
Q: Is AMSOIL approved for my bike?
Yes. AMSOIL meets or exceeds all OEM requirements for Harley-Davidson and other V‑Twin motorcycles.
Q: Will it void my Harley warranty?
No. You’re protected by the Magnuson-Moss Warranty Act. AMSOIL meets all required standards.
After riding for over two decades and testing multiple brands, I can confidently say AMSOIL Synthetic Motorcycle Oil outperforms Harley-Davidson’s own oil, both in the lab and on the open road.
The difference is clear: smoother shifting, cooler running, longer intervals, and peace of mind that your V-Twin is fully protected. If you’re serious about getting the most out of your Harley, don’t settle for less than the best.
Join Amsoil NOW. It offers:
Buy AMSOIL V‑Twin Oil Now and experience the difference in your Harley’s performance.
