AMSOIL Synthetic 10W-40 Motorcycle Oil

See product application notes for Harley Davidson Motorcycles at bottom of page

AMSOIL Synthetic Motorcycle Oils have been reformulated with new high performance additive technology that provides even greater multi-functional benefits for the special requirements of motorcycle applications. These independent and exclusive new AMSOIL formulations provide second-to-none viscosity protection for hot-running American and foreign motorcycle engines, transmissions and primary chaincases. Performance specifications include: API SG, SL/CF; JASO MA; API GL-1

PRODUCT DESCRIPTION

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 storage.

AMSOIL MCF is multi-functional and fulfills the requirements of both domestic and foreign motorcycles. It outperforms other conventional and synthetic motorcycle oils.

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 MCF 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 strength ASTM Test Method D-4683 March 16, 2005	10W-40 Motorcycle Oil Wear Comparison ASTM Test Method D-4172 March 16, 2005

Provides Extreme Pressure Quality Protection for Gears

With AMSOIL MCF, 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 photos below).

FZG Gear Test (ASTM D-5182) AMSOIL 10W-40 (MCF)	FZG Gear Test (ASTM D-5182) Motul 300 V 10W-40

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).

Rust Test ASTM D-1748 AMSOIL 10W-40 (MCF)	Rust Test ASTM D-1748 Castrol GPS 10W-40

Provides Excellent Wet Clutch Performance

AMSOIL MCF contains no friction modifiers and promotes smooth shifting and positive clutch engagement. AMSOIL MCF controls heat and prevents slippage and glazing, and its high TBN resists acids that can degrade clutch material, helping improve clutch life.

APPLICATIONS

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®, KTM® and other motorcycles where 10W-40 or 20W-40 engine oils or SAE 80W/90, GL-1 gear oils are used. Not recommended for shaft drive hypoid gears or where an API GL-4 or GL-5 gear oil is required.

MIXING AMSOIL

AMSOIL Synthetic 10W-40 Motorcycle Oil is compatible with conventional and synthetic motor oils; 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 motorcycle oil.

SERVICE LIFE

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.

Harley Davidson Motorcycles

Crankcase requiring 20W50 lubricant; Harley Davidson part numbers 99903-93 and 99896-88, use the AMSOIL High Performance Synthetic 20W-50 Motorcycle Engine Oil, product code AMV.

Transmission requiring 75W90 lubricant; Harley Davidson part numbers 99892-84 and 98853-96, use the AMSOIL Series 2000 Synthetic 75W90 (AGR/TGR) Gear Lube, product code TGR.

Chain Case Oil (primary) lubricants requiring 10W40; Harley Davidson part number 99887-84, uses the AMSOIL High Performance Synthetic 10W40 Motorcycle Engine Oil, product code AMF.

The exception is the Sportster. It has two oil reservoirs instead of three and uses the same oil in both reservoirs. Use AMSOIL 20W50 Synthetic Engine Lubricant in both reservoirs, product code AMV

Note: The AMSOIL 20w50 (AMV) and 10W40 (AMF) Motorcycle Engine Oils do not contain friction modifiers and meet Harley Davidson specification for the wet clutch system. 

Harley-Davidson forks that recommend type "E" or "B" fork oils, use the AMSOIL Shock Therapy Suspension Fluid, product code STM

Harley Davidson air filter part numbers, 2900252, 29002-52A, 29002-57, 29002-58, and 29036-56 uses the AMSOIL, product code TS-77.