High-Performance Lubricant for Engines, Transmissions
and Primary Chaincases
AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil is a premium oil de- signed for those who demand the
best protection for their motorcycles. It is the result of extensive research and is specially
formulated to excel in all areas unique to motorcycles, including the high temperatures of air-
cooled engines such as Harley-Davidson* V-twins, wet-clutch lubrication, extreme-pressure regions
of gears and chains and rust common to short trips and storage. AMSOIL Synthetic V-Twin Oil is
multi-functional and fulfills the requirements of both domestic and foreign motorcycles.
Resists viscosity breakdown 6X better than Harley-Davidson* SYN3* for improved protection against compensator and transmission gear wear.
Resists extreme heat to help keep engines clean and efficient.
Reduces wear and deposits for maximum engine compression and power.
Convenience of one lubricant for all three sumps.
Unique additive system helps keep engines clean and running efficiently in the toughest riding conditions.
Performs like a gear lube without the negative effects of extreme-pressure additives.
“After 1,000 miles of extreme-heat dyno testing, AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil protected against piston-ring sticking and piston scufing for maximum compression and power.”
Advanced Motor Oil Technology
AMSOIL
Reduces Wear and Deposits
Big, powerful V-twin engines run extremely hot, especially in summer during stop-and-
go rally or parade trafic. High heat breaks down oil formulated for standard service,
inviting wear and performance-robbing deposits.
AMSOIL Synthetic V-Twin Motorcycle Oil is formulated with naturally heat-resistant synthetic base
oils that resist oxidation in extreme heat. It contains a heavy treatment of anti-wear additives to
reduce wear regardless of operating conditions. After 1,000 miles of dyno testing during
which oil temperature reached 300°F (149°C) and cylinder temperature reached 421°F (216°C), AMSOIL
V-Twin Oil fought piston- ring deposits to prevent sticking and protected against piston scufing
for maximum compression and power
Protects Transmissions and Primaries
AMSOIL V-Twin Oil delivers exceptional protection in transmissions and primary
chaincases. It is shear stable and resists thinning from mechanical activity. AMSOIL
20W-50 V-Twin Motorcycle Oil performs like a gear lube without the negative effects of
extreme-pressure additives. It resists viscosity breakdown 6X better than Harley-Davidson SYN3* for
improved protection against compensator and transmission gear wear.
Delivers Superior Rust Protection
Motorcycles are prone to rust from storage, humidity and short drives. Rust can cause major damage
such as roller-bearing failure, wear, compression loss and blow-by.
Good rust protection, however, comes by design and is not natural to motor oils. Unlike
many motorcycle oils, AMSOIL Synthetic V-Twin Oil contains special anti-rust agents. It passes the
ASTM D1748 humidity cabinet rust test, demonstrating superior rust
protection to help your engine achieve maximum performance and long life.
Provides Excellent Wet-Clutch Performance
AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil contains no friction modiiers 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.
APPLICATIONS
Use in motorcycles that require 20W-50 motorcycle oil and
any of the speciications listed below, including those made by Harley-Davidson* and Buell.*
Suitable for use in motorcycles that require an API CH-4 oil.
JASO MA/MA-2 • API SL, SH, SG, CG-4, CF • ISO-L-EMA2
Do not use where an API GL-4 or GL-5 gear oil is required.
COMPATIBILITY
AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil is compatible with other synthetic and conventional
motor oils. Mixing AMSOIL oils with other oils, however, will shorten the oil’s life expectancy and
reduce its performance beneits. AMSOIL does not support extended drain intervals where oils have
been mixed.
Aftermarket oil additives are not recommended for use with
AMSOIL Synthetic Motorcycle Oil.
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AMSOIL Guarantee
AMSOIL products are Warranty Secure, keeping your factory warranty intact. They are high-performance replacements for vehicle/equipment manufacturer-branded products.
