Get the Best Synthetic Oil for Your Motorcycle

Check out this heat test on a Harley in the video below!

Reduces Wear and Deposits

Reduces Friction, Heat and Wear

Smooth, Confident Shifts

Resists Extreme Heat

Retains Viscosity for Excellent Wear Protection

Delivers Superior Rust/Corrosion Protection

Resists viscosity breakdown - Keeps engines clean and efficient - Reduces wear and deposits

Real Testimonials and Experiences by Verified Buyers!

"Works great. Bike runs a couple degrees cooler and the shifts feel crisper, much easier to find neutral when it’s hot on a bike that is notoriously hard to find neutral."

Brendin

"My FLHTCU now has 72000 miles on it. From the first 600-mile oil change, this is the only oil I have used. My oil is changed every 5000 miles. Every time I change the oil, I submit a sample for analysis. Each time, it comes back clean. At my last full service, I did a cylinder leak-down test, and the results returned 5%. Outstanding for an air-cooled engine at 70000 miles! Best oil on the market."

TimU

"I’ve been a mechanic all my life and always use Amsoil , have had it tested after use and could keep it running longer . It out last Harley oil by far and is a better lubricant, I also use it in my Diesel and always will . Oil is the heart of keeping it lubed so use the best."

Jeffrey

Best Harley Davidson Oil

Introducing AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil, the premium choice for motorcycle owners who require superior protection for their bikes. This oil is the culmination of care-full research specially designed to excel in all the unique challenges that motorcycles face. From high-intensity heat in air-cooled engines, like those found in Harley-Davidson* V-twins, to keeping wet clutches running smoothly, all the way to protecting gears and chains under the most pressure, not forgetting rust prevention on short trips or storage—AMSOIL Synthetic V-Twin Oil does it all. It’s also designed to meet the needs of both domestic and foreign motorcycles, so you can rely on it to keep your bike running smoothly. We also sell oil change kits for Harley with a black or chrome filter. Search your specific motorcycle using the links above or below to check if an oil change kit is available.

Does Synthetic Oil Reduces Wear and Deposits in Motorcycle Engines?

In the scorching heat of summer, big, powerful V-twin engines can really take a beating, especially during stop-and-go traffic like rallies or parades. Regular oils can break down under this extreme heat, leading to wear and the buildup of gunk that can steal away your bike’s performance. But AMSOIL Synthetic V-Twin Motorcycle Oil is different. It’s made with special synthetic base oils that can handle the heat without breaking down. Plus, it’s packed with anti-wear additives that keep your engine protected, no matter how tough the conditions. In fact, after 1,000 miles of rigorous testing, even with oil temperatures hitting extreme highs and cylinder temperatures pushing the limits, AMSOIL Synthetic V-Twin Oil fought off piston ring deposits, preventing sticking and protecting against piston scuffing to keep your engine running at its best, delivering maximum compression and power.

Does It Protect Transmissions and Primaries?

AMSOIL V-Twin Oil is more than an engine oil—it’s also perfect for your transmission and primary chaincases. Unlike conventional oils that can thin out with pressure, AMSOIL Synthetic V-Twin Motorcycle Oil stays strong and true. It holds up under the most torturous mechanical action, performing like a gear lube without the problems of extremely high pressure additives. In fact, it resists viscosity breakdown up to 8 times better than Harley-Davidson SYN3*, offering improved protection against wear on parts such as compensators and transmission gears. So whether you’re cruising down the highway or revving through the city, you can trust AMSOIL to keep your bike running smoothly mile after mile.

How Can I Protect My Motorcycle from Rust?

The rust is what often affects motorcycles because of storage, humidity, and short trips that result in serious trouble such as the failure of the roller-bearing, wear, compression loss, and blow-by. AMSOIL Synthetic V-Twin Oil is truly an exception in that most motorcycle oils don’t have the natural features of rust protection. Its formulations possess unique anti-rust agents that go far beyond the basics. Indeed, it can easily pass the rigorous ASTM D1748 humidity cabinet rust test with flying colors, demonstrating its effective rust protection capabilities. With AMSOIL, you can depend on your engine operating at peak and enjoying a long and healthy life on the road.

What About Synthetic Oil for Other Motorcycles?

With metric bikes, the perfect lubricant is none other than AMSOIL Synthetic Metric Motorcycle Oil. Riding is the essence, whether it’s tearing up the road or cruising, or even maneuvering your way through traffic. This oil guarantees premium wear protection, which means your engine will always be in the best shape possible mile after mile. You can be sure to have smooth, confident shifts and consistent performance, and your ride will be cool and clean. With AMSOIL Synthetic Metric Motorcycle Oil, you can ride confidently, with the highest degree of protection and performance for your bike. Plus, it’s Warranty Secure™, so you’ll feel confident your oil won’t void your motorcycle’s warranty.

Reduces Friction, Heat and Wear

In high-heat conditions, AMSOIL Synthetic Metric Motorcycle Oil exceeds the standard for high-temperature film strength to deliver excellent wear protection. It keeps engines running cool by effectively reducing friction and heat, and it contains a heavy treatment of anti-wear additives to reduce wear regardless of operating conditions. AMSOIL Synthetic Metric Motorcycle Oil is thermally (heat) stable and contains maximum levels of oxidation-inhibitor additives. It is extremely resistant to volatility and is engineered to prevent damaging sludge and carbon deposits for superior engine cleanliness.

Smooth, Confident Shifts

AMSOIL Synthetic Metric Motorcycle Oil contains no friction modifiers and promotes smooth shifting and positive clutch engagement. It is engineered to control heat and prevent slippage and glazing, promoting long clutch life.

Controls Foam

High-rpm operation causes some motor oils to foam. When foam bubbles travel between gear teeth or engine components, they collapse, allowing metal surfaces to contact, causing wear. AMSOIL Synthetic Metric Motorcycle Oil contains advanced anti-foam additives that help prevent foam, allowing riders to confidently push their bikes to the limit.

Delivers Superior Rust and Corrosion Protection

Unlike many motorcycle oils, AMSOIL Synthetic Metric Motorcycle Oil contains special anti-rust agents that deliver superior rust protection during storage and long periods of inactivity. With its high 11.6 total base number (TBN), AMSOIL Synthetic Metric Motorcycle Oil provides greater protection from acid corrosion and helps maintain internal engine cleanliness.

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Get the Best Synthetic Oil for Your Motorcycle

Check out this heat test on a Harley in the video below!

Reduces Wear and Deposits

Reduces Friction, Heat and Wear

Smooth, Confident Shifts

Resists Extreme Heat

Retains Viscosity for Excellent Wear Protection

Delivers Superior Rust/Corrosion Protection

Resists viscosity breakdown - Keeps engines clean and efficient - Reduces wear and deposits

Real Testimonials and Experiences by Verified Buyers!

Best Harley Davidson Oil

Does Synthetic Oil Reduces Wear and Deposits in Motorcycle Engines?

Does It Protect Transmissions and Primaries?

How Can I Protect My Motorcycle from Rust?

What About Synthetic Oil for Other Motorcycles?

Reduces Friction, Heat and Wear

Smooth, Confident Shifts

Controls Foam

Delivers Superior Rust and Corrosion Protection

Updated and reviewed on March 8, 2025 by SearchForParts.com