AMSOIL: The Ultimate Motorcycle Protection

As motorcycle enthusiasts prepare for a summer of adventure, it's important to prioritize safety and protection. One essential aspect of this is ensuring that your motorcycle is properly maintained and equipped with the ultimate protection. This includes using high-quality oil that is specifically designed to meet the unique needs of your bike, whether you ride a V-twin, metric, or dirt bike. With the right maintenance and protection, you can enjoy a long and thrilling riding season with peace of mind.

Harley Davidson Syn 3 AMSOIL V Twin synthetic oil

V-Twin Motorcycles

V-twin motorcycles are known for their power and performance, but they also generate a lot of heat. This can be a problem in slow-moving traffic or during parades, where the engine may not receive enough airflow to stay cool. Air-cooled engines rely on the movement of air over the cooling fins to dissipate heat, so stop-and-go riding or idling on hot days can cause the engine temperature to rise rapidly. To prevent damage to the engine, it's important to use motor oil that can withstand the intense heat and mechanical stress of a V-twin engine. If the oil loses viscosity, it may not provide adequate protection for the engine.


V-twin motorcycles are known for their unique engine design, which features two cylinders arranged in a V-shape. However, this design can also make them more susceptible to oil viscosity loss, especially in bikes that use the same oil for both the engine and transmission. To combat this issue, AMSOIL has developed a synthetic V-twin motorcycle oil that is shear stable and can withstand the mechanical activity of the engine without thinning, providing superior protection against wear.


AMSOIL Synthetic V-Twin Motorcycle Oil is the perfect solution for bikers who want to simplify their maintenance routine. This high-performance oil is specially designed to work in the engine, transmission, and primary chaincase, so you only need one product for all three parts of your bike. It comes in a range of viscosities, including 20W-40, 20W-50, 15W-60, and SAE 60, and is part of our complete V-twin product line. We also offer complete oil-change kits with filters for your convenience. If you prefer to use oils formulated specifically for your transmission or chaincase, we have you covered with our Synthetic V-Twin Transmission Fluid and Synthetic V-Twin Primary Fluid, both engineered to the same high standards as our V-twin motorcycle oil.


Metric Motorcycles

Metric motorcycles refer to bikes that use the metric system for measuring engine displacement, as opposed to the imperial system used by American-made motorcycles. Metric motorcycles encompass a variety of styles, including standard, cruiser, touring, and sport bikes. For those who prefer high-performance sport bikes, it's important to choose a wet-clutch-compatible lubricant that can provide efficient and consistent shift performance. Due to the high speeds and rpm associated with these bikes, using inferior oils can cause foaming and decrease their ability to protect the engine. It's crucial to select a high-quality lubricant to ensure the longevity and performance of your metric motorcycle.

While each style has its own unique features, all metric motorcycles prioritize engine power, smooth shifting, and reliability. Touring bikes are designed for long, cross-country trips and prioritize comfort and luxury, making extended drain intervals a key consideration.


AMSOIL Synthetic Metric Motorcycle Oil is designed to enhance the performance of your bike. Its advanced synthetic technology ensures that your engine is responsive and delivers excellent wet-clutch compatibility, allowing for smooth shifts and a comfortable ride. With its ability to control foam, this oil enables you to push your bike to its limits, achieving maximum speed, acceleration, and cornering ability. Additionally, its exceptional resistance to extreme heat ensures that your bike will operate trouble-free for miles on end, giving you peace of mind while you ride.

AMSOIL Synthetic Metric Motorcycle Oil is a top-performing oil that provides exceptional protection against engine wear in high-performance engines. It is available in a range of viscosities, including 10W-30, 10W-40, and 15W-50, and is part of a complete product line designed specifically for metric motorcycles. This line includes oil filters and AMSOIL Powersports Antifreeze & Coolant. With extended drain intervals of up to twice the manufacturer's recommendations, riders can confidently explore new territories without worrying about their engine's health.

dirt bike jumping at sunset on off-road terrain

Dirt Bikes

Dirt bikes are designed to handle a variety of challenging terrain and conditions, from racing on tracks to navigating rough trails. These machines are built to withstand the stress of low-speed maneuvers and high-speed bursts of acceleration. When racing, riders must quickly shift between wide-open throttle on straightaways and rapid acceleration through turns. Jumping requires precise throttle control to keep the rear tire spinning in the air and then absorb the impact when it lands. And when trail riding, riders must constantly manipulate the clutch and throttle to navigate over obstacles and through tight spaces.

Dirt bikes are known for their high-performance engines, which are designed to be lightweight for optimal speed and agility. However, this also means that the engine is under a lot of stress, as the combination of high RPMs and lighter materials can lead to failure if the motor oil is not up to par. It's important to use high-quality oil and keep up with regular maintenance to ensure the longevity and reliability of your dirt bike's engine.

Dirt bikes are designed with shorter piston skirts to decrease friction, but this can have a negative impact on the engine's lifespan. The shorter piston can cause the piston to rock inside the cylinder, putting immense pressure on the small area where the piston skirt and cylinder wall meet. To protect this area, a strong oil film is necessary for the engine to survive. Therefore, it is crucial to use high-quality oil to ensure the longevity of the engine.

Dirt bikes are notorious for their small oil capacity, typically only holding about one quart. This puts a lot of strain on the oil, which must work hard to prevent wear, resist heat, and prevent deposits. As a result, most dirt bike riders change their motor oil frequently to keep their bikes running smoothly. In fact, with heavy use, the top-end may need to be rebuilt every 15 hours or so to maintain optimal performance.


AMSOIL offers a range of synthetic oils specifically designed for dirt bikes. Their Synthetic Dirt Bike Oil is formulated to improve engine performance and reliability, providing superior protection against engine wear. It's also a more cost-effective and hassle-free alternative to rebuilding your top-end. For two-stroke engines, AMSOIL DOMINATOR® Synthetic 2-Stroke Racing Oil is the go-to choice. And for four-stroke dirt bikes, AMSOIL offers Synthetic Dirt Bike Oil in 10W-40, 15W-50, and 10W-60 viscosities, along with oil filters and Synthetic Dirt Bike Transmission Fluid, making it a complete product line for dirt bike enthusiasts.

AMSOIL understands that motorcycles require specialized lubricants to keep their powerful and high-revving engines running smoothly. That's why they offer premium synthetic oils that are specifically designed to meet the unique demands of different types of motorcycles, ensuring optimal performance and protection. Whether you ride a sport bike, cruiser, or touring motorcycle, AMSOIL has the right oil for your ride.

Find Products for Your:

auto and light truck look up for AMSOIL products
Auto/Light Truck
motorcycle look up for AMSOIL products
ATV look up for AMSOIL products
UTV look up for AMSOIL products
snowmobile look up for AMSOIL products
Marine Outboard look up for AMSOIL products
Marine Outboard
PWC look up for AMSOIL products
heavy duty semi truck look up for AMSOIL products