High-Performance Motorcycle Engine and Transmission Oil
Tests Prove AMSOIL is the Best Oil for Harley Davidson
Designed for those who demand the absolute best, AMSOIL Full Synthetic SAE 60 V-Twin Motorcycle Oil (Product Code: MCS) is recommended for Harley Davidson and big-bore motorcycles that require a 60-weight oil. Its superior synthetic formulation provides long service life and maximum protection against engine wear in high-performance motorcycle engines and transmissions. AMSOIL SAE 60 Motorcycle Oil outperforms other conventional and synthetic motorcycle oils. As shown in motorcycle oil comparison tests (see Product Details below), AMSOIL Synthetic SAE 60 Motorcycle Oil outperforms Harley Davidson SAE 60 Motorcycle Oil; these tests prove AMSOIL is the best oil for Harley Davidson.
AMSOIL Motorcycle Oil is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet-clutch lubrication, extreme-pressure regions of gears and rust common to short drives and storage. AMSOIL Synthetic SAE 60 Motorcycle Oil is shear stable. It features superior heat resistance, stops viscosity breakdown (loss) and helps maintain proper oil pressure in elevated temperatures. It contains no friction modifiers and is wet clutch compatible. It protects gears and chains, and meets SAE 140, API GL-1 gear oil requirements.
AMSOIL SAE 60 Motorcycle Oil fulfills the requirements of both domestic and foreign motorcycles and is recommended for use up to twice the motorcycle manufacturer-recommended oil change interval. Meets JASO MA-MA2 (Motorcycle Wet Clutch) performance specifications.
- Offers superior heat resistance and wear protection
- Helps maintain oil pressure in extreme heat conditions
- Extremely resistant to breakdown and engineered to prevent damaging sludge and carbon deposits for superior engine cleanliness
- Protects gears and chains, eliminating the need for multiple lubricants
- Provide exceptional protection against rust and corrosion during storage
- Robust anti-wear additive packages provide superior wear protection and longer equipment life
- Absolute shear stability maintains protective viscosity in high-heat, high-shear conditions
- Better performance and price than competitive motorcycle oils
- No friction modifiers
- Wet clutch compatible
- Recommended for up to twice the manufacturer’s recommended oil change interval
AMSOIL Full Synthetic SAE 60 V-Twin Motorcycle Oil Product Code Pkg/Size MCSQT-EA Quart Bottle MCSQT-CA Quart Bottles (case of 12)
The Result of Extensive Research
AMSOIL Full Synthetic SAE 60 V-Twin Motorcycle Oil is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. AMSOIL Motorcycle Oil is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet-clutch lubrication, extreme-pressure regions of gears and rust common to short drives and storage.
Helps Maintain Proper Motorcycle Oil Pressure in Extreme Heat Conditions
In high heat conditions, engine protection is not sacrificed with AMSOIL Synthetic SAE 60 Motorcycle Oil. It has exceptional high-temperature film strength, contains a heavy treatment of anti-wear additives to reduce wear regardless of operating conditions and helps maintain oil pressure in extreme heat conditions. AMSOIL SAE 60 Motorcycle Oil is thermally (heat) stable and contains maximum levels of oxidation inhibitor additives. It is extremely resistant to breakdown and engineered to prevent damaging sludge and carbon deposits for superior engine cleanliness.
Protects Motorcycle Gears, No Need for a Separate Transmission Fluid
With AMSOIL Synthetic SAE 60 Motorcycle Oil, there is no need for a separate transmission fluid. It is shear-stable and will not thin out from mechanical activity. It performs like a gear lube without the negative effects of extreme-pressure additives and it meets SAE 140, API GL-1 gear oil requirements.
Superior Rust Protection
Motorcycles are prone to rust from storage, humidity and short drives. Rust can cause major damage such as roller bearing failure, uncontrolled wear, compression loss and blow-by. Good rust protection, however, comes by design and is not natural to engine oils. Unlike many motorcycle oils, AMSOIL Synthetic SAE 60 Motorcycle Oil contains special anti-rust agents.
What is the Best Oil for Harley Davidson?
AMSOIL Synthetic SAE 60 Motorcycle Oil contains a heavy treatment of anti-wear additives to reduce wear regardless of the operating conditions. The Four Ball Wear Test (ASTM D-4172) determines the wear protection properties of a lubricant; the smaller the average wear scar, the better the wear protection provided by the lubricant. As shown in the chart below, AMSOIL SAE 60 Motorcycle Oil produces a significantly smaller wear scar than Harley Davidson HD 360 SAE 60 Motorcycle Oil, providing unsurpassed protection against engine wear, reducing maintenance costs and extending equipment life.
AMSOIL SAE 60 V-Twin Oil vs Harley Davidson HD 360 SAE 60 Motorcycle Oil in the Four-Ball Wear Test
The High-Temperature/High-Shear (HTHS) Test (ASTM D-4683) measures viscosity and the rate of temporary and permanent viscosity loss of an oil under severe high-temperature and high-shear conditions. The more resistant an oil is to high-temperature viscosity loss, the better it protects; even a HTHS difference of 0.1 cP makes a significant difference. As shown in the chart below, AMSOIL Synthetic SAE 60 V-Twin Motorcycle Oil does a better job than Harley Davidson HD 360 SAE 60 Motorcycle Oil at maintaining its viscosity and is, therefore, better at preventing bearing wear.
AMSOIL SAE 60 V-Twin Oil vs Harley Davidson HD 360 SAE 60 Motorcycle Oil in the High-Temperature/High-Shear Test
Excellent Wet Clutch Performance
AMSOIL Synthetic SAE 60 Motorcycle Oil contains no friction modifiers and promotes smooth shifting and positive clutch engagement. It controls heat and helps prevent slippage and glazing, while its high TBN helps improve clutch life by resisting the acids that can degrade clutch material.
Extended Service Life
AMSOIL Synthetic SAE 60 Motorcycle Oil can extend oil change intervals far beyond those recommended for conventional oils. Their unique synthetic formulation provides a service life up to two times longer than manufacturers’ recommendations and offers the best protection against wear, making AMSOIL SAE 60 Motorcycle Oil extremely cost effective at keeping the costs of operating and maintaining motorcycles down.
On-road use in engines and transmissions: Up to two times the motorcycle manufacturer’s recommendation (miles/hours) or one year, whichever comes first. For Big Twin Harley-Davidson transmissions only, follow the Harley-Davidson recommended drain interval for synthetic oil of up to 20,000 miles or one year, whichever comes first.
Off-road use in engines and transmissions: Use the oil drain recommendation of the motorcycle manufacturer.
Racing or in engines modified from the original factory design: No change interval recommendation is made. Oil changes are at the owner’s discretion.
Oil Filter Service Intervals
Extended oil drain intervals are based on the user following AMSOIL recommended oil filter service intervals:
- If using an AMSOIL Ea Motorcycle Oil Filter, install a new oil filter at time of oil change. AMSOIL Ea Motorcycle Oil Filters are designed for extended oil drain intervals. They stop smaller particles, allow more oil flow and last longer than regular filters.
- If using other brands oil filters, install a new oil filter at time of oil change then change at the engine manufacturer’s recommended filter change intervals.
AMSOIL Synthetic SAE 60 Motorcycle Oil (MCS) is recommended for use in early-model air-cooled V-Twin engines where a 60-weight motor oil is specified. SAE 60 motor oils are commonly used in Harley-Davidson Knucklehead, Panhead, Shovelhead and big-bore motorcycles. Not recommended for use in cold-temperature environments.
Harley Davidson Oil Recommendation ChartAttention Power Sports Enthusiasts!
AMSOIL Online Application Guides contain lube and filter specifications for motorcycles, ATVs, UTVs, snowmobiles, PWC (personal watercraft) and marine outboards.
AMSOIL Full Synthetic SAE 60 V-Twin Motorcycle Oil meets or exceeds the following performance test requirements and may be used in motors requiring oils meeting these specifications:
- API SG, SL/CF
- API GL-1
- JASO MA-MA2
Shipping for Online and Catalog Customers
Online and catalog customers receive FREE standard ground shipping on orders of $100 or more when shipped to a valid address in the continental United States, including APO and FPO military post boxes. AMSOIL does not ship to PO Boxes. The $100 minimum does not include taxes, fees or other charges. For online and catalog retail orders totaling less than $100, a flat shipping rate of $8.50 will apply in the continental U.S.
Please Note: AMSOIL Dealers and Preferred Customers are not eligible for free shipping. Orders containing only clothing and promotional materials totaling less than $20 are subject to $5 shipping and handling.
For more information, please visit the AMSOIL, Inc. website: AMSOIL Shipping, Sales Tax and Product Return Guidelines
Please visit the AMSOIL, Inc. website: AMSOIL Shipping, Sales Tax and Product Return Guidelines