AMSOIL Synthetic 10W-40 Motorcycle Oil (MCF) is a premium oil designed for those who demand the
absolute best lubrication for their motorcycles. AMSOIL MCF 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
AMSOIL MCF is multi-functional and fulfills the requirements of both
domestic and foreign motorcycles. It outperforms other conventional and synthetic motorcycle
AMSOIL, the leader in synthetic lubrication, produced the world’s
first API qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First
in Synthetics® to do the best job protecting your motorcycle.
Reduces Friction, Heat and Wear
In high heat conditions, engine protection is not sacrificed with AMSOIL Synthetic Motorcycle Oil.
It has the best high temperature film strength (see High Temperature Viscosity Protection graph
below) of all oils tested and contains a heavy treatment of anti-wear additives to reduce wear
regardless of the operating conditions (see Wear Comparison graph at right). AMSOIL 10W-40
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.
10W-40 Motorcycle Oil
High Temperature Viscosity Protection
Higher values reflect better film
ASTM Test Method D-4683 Test Date August 2008
Provides Extreme Pressure Quality Protection for Gears
With AMSOIL Synthetic Motorcycle Oil, there is no need for separate transmission lubricants. It is
absolutely shear stable and will not thin out from mechanical activity. AMSOIL MCF performs like a
gear lube without the negative effects of extreme pressure additives. In the FZG gear test, AMSOIL
MCF achieved a perfect score with a “zero” wear rating (see photo below).
Delivers Superior Rust Protection
Motorcycles are prone to rust from storage, humidity and short drives. Rust can cause major damage
such as 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 MCF contains special
anti-rust agents. It passes the ASTM D-1748 humidity cabinet rust test and clearly demonstrates
superior rust protection (see photos below).
Provides Excellent Wet Clutch Performance
AMSOIL Synthetic 10W-40 Motorcycle Oil contains no friction modifiers and promotes smooth shifting
and positive clutch engagement. AMSOIL MCF controls heat and prevents slippage and glazing, helping
improve clutch life. AMSOIL Synthetic 10W-40 Motorcycle Oil meets the wet clutch frictional
requirements of JASO Standard T903: 2006, MA/MA2 and ISO-L-EMA2 of ISO Standard
For irrefutable proof of the superiority of AMSOIL Synthetic Motor Oils refer to
the AMSOIL A Study of Motorcycle Oils white paper (G2156).
AMSOIL Synthetic 10W-40 Motorcycle Oil is recommended for liquid or air-cooled 4-stroke engines. It
meets SAE 80W/90, API GL-1 gear oil requirements and is recommended for transmissions on both 4-
and 2-stroke motorcycles. AMSOIL MCF is recommended for Honda®, Kawasaki®, Yamaha®, Suzuki®, BMW®,
Husqvarna®, Victory® and other motorcycles where 10W-40 or 20W-40 engine oils or SAE 80W/90, GL-1
gear oils are used. Not recommended where an API GL-4 or GL-5 gear oil is required.
AMSOIL Synthetic 10W-40 Motorcycle Oil is compatible with conventional and synthetic motor
however, mixing oils may shorten the oil life expectancy and reduce the performance benefits.
AMSOIL does not support extended drain intervals where oils have been mixed.
Aftermarket oil additives are not recommended for use with AMSOIL
For “on-road” use in engines and transmissions, change AMSOIL MCF and AMSOIL engine oil filter at
twice the motorcycle manufacturer change interval or one year, whichever comes first. Change other
brand oil filters at standard intervals.
For “off-road” use in engines and transmissions, change AMSOIL MCF
at the standard motorcycle manufacturer change interval.
For racing or in engines modified from the original factory design,
no change interval recommendation is made. Oil changes are at the owner’s discretion.
|TYPICAL TECHNICAL PROPERTIES
|SAE 10W-40 Synthetic Motorcycle
|Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
|Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
|Viscosity Index (ASTM D-2270)
|Pour Point °C (°F) (ASTM D-97)
|Flash Point °C (°F) (ASTM D-92)
|High-Temperature/High-Shear Viscosity (ASTM D5481 @ 150°C, 1.0 X 106
|Four-Ball Wear Test (ASTM D-4172 @ 40 kgf, 150°C, 1800 rpm, 1 hr), Scar, mm
|FZG (ASTM D-5182), Load State Pass (Wear in mm)
||13 (0 mm)
|Noack Volatility, % weight loss (g/100g) (ASTM D-5800)
|Foam (ASTM D-892, Sequence I, II & III)
|Shear Stability Kurt Orbahn (ASTM D-6278), % viscosity change 120
|Rust Test - Humidity Cabinet (ASTM D-1748)
||No Rust, PASS
|Total Base Number