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AMSOIL IS IDEAL FOR MOTORCYCLES
When only the best will do!
20W-50 Motorcycle Oil Wear Comparison ASTM Test Method D-4172 March 16, 2005
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SAE 20W-50 Synthetic Motorcycle Oil (MCV)
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

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PRODUCT DESCRIPTION
AMSOIL High Performance Synthetic 10W-40 and 20W-50 Motorcycle Motor Oil is specifically formulated to provide tough lubricating protection in the most demanding operations. It is recommended for use in motorcycles, and other high-stress vehicles. AMSOIL SAE 10W-40 and 20W-50 High Performance Synthetic Motorcycle Motor Oils may be used in all motorcycle engines, including those with a wet clutch system, requiring an API CD, SG-CG or SH-CD oil.
Glen Cove, NY -- Ed Nasalgia, a 40-year motorcycle enthusiast, bought his Honda Goodwing new in 1983. At 600 miles he installed AMSOIL Synthetic 10W-40 Motor Oil. Ed now uses AMSOIL Synthetic 10W-40 Motorcycle Oil.
Ed's motorcycle shows 144,000 miles on the odometer, and Ed says, "I never have to add oil to it. Even after putting 18,000 miles on it last summer, the oil level was still in the safe zone this spring. The engine has never been taken apart for any work and it still runs extra smooth and feels very powerful."
 WEAR PROTECTION
The AMSOIL High Performance Synthetic 10W-40 and 20W-50 Motorcycle Motor Oils anti-wear additive package contains high levels of zinc and phosphorous for superior protection of cam lobes and other high-pressure parts. In fact, AMSOIL High Performance Synthetic 20W-50 Motorcycle Motor Oil contains more zinc and phosphorous than most popular motorcycle manufacturer motor oils. Its superior anti-wear package offers superior wear protection. AMSOIL High Performance Synthetic 10W-40 Motorcycle Motor Oil leaves a wear scar up to 38 percent smaller than the scars left by other popular brands in the ASTM D4172 Four-Ball Wear Test.
Some motorcycle transmissions and engines share an oil sump, so the engine oil also provides wear protection to the transmission gears. AMSOIL High Performance Synthetic 10W-40 and 20W-50 Motorcycle Motor Oils offer superior wear protection to transmission gears, which are often subjected to high surface pressure and rotation speed. It also promotes proper wet clutch performance.
FRICTION MODIFIER FREE
AMSOIL High Performance Synthetic 20W-50 and 10W-40 Motorcycle Motor Oils contains no friction modifiers, making it ideal for motorcycle engines. The friction modifier free formulation of AMSOIL High Performance Synthetic 10W-40 Motorcycle Motor Oil ensures dependable starting, smooth running, good fuel efficiency, desirable stall speeds and clutch compatibility.
SAE 10W-40 Synthetic Motorcycle Oil (MCF)
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

TEMPERATURE AND PERFORMANCE
AMSOIL High Performance Synthetic 10W-40 and 20W-50 Motorcycle Motor Oils offer the superior protection and lubrication at high and low temperatures found only in top-quality synthetic oils. Its outstanding low temperature fluidity ensures easy cranking, dependable starting and fast post-startup protection. Its superior high-temperature protection ensures the formation of a clean, protective film of oil between working parts during high-temperature, high-stress operations.
High-temperature operations often lead to the thermal degradation and oxidation of conventional oils, which leads to the formation of deposits, sludge and varnish. AMSOIL High Performance Synthetic 10W-40 and 20W-50 Motorcycle Motor Oils withstand thermal degradation and oxidation at higher temperatures than conventional oils do, ensuring clean, dependable performance in high-stress, high temperature operations.
NEW VEHICLES UNDER WARRANTY
AMSOIL High Performance Synthetic 10W-40 and 20W-50 Motorcycle Motor Oils will not void new vehicle warranties. New vehicle warranties are premised on the use of oils meeting specific API service classifications and SAE viscosity grades. AMSOIL High Performance Synthetic 10W-40 Motorcycle Motor Oil meets the current API and SAE requirements (as labeled) and are perfectly suited for use in any new vehicle stipulating those requirements.
SERVICE LIFE
AMSOIL High Performance Synthetic 10W-40 and 20W-50 Motorcycle Motor Oils are formulated for extended drain intervals. Length of service depends on application.
MOTORCYCLES, ALL-TERRAIN VEHICLES, ETC.
Change AMO at three times the engine manufacturer's recommended drain interval or one year, whichever comes first.
AMSOIL PRODUCT WARRANTY
AMSOIL INC. warrants that the use of its products will not cause mechanical damage to any mechanically sound equipment when AMSOIL INC. products are used in full compliance with AMSOIL INC. recommendations. Click here for details.
Synthetic 10W-30 Motorcycle Oil (MCT)
PRODUCT DESCRIPTION AMSOIL Synthetic 10W-30 Motorcycle Oil (MCT) is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. AMSOIL MCT 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 MCT 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 automotive 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 engine.
Reduces Friction, Heat and Wear In high heat conditions, engine protection is not sacrificed with AMSOIL. AMSOIL 10W-30 keeps engines running cool by effectively reducing friction and heat, and it contains a heavy treatment of anti-wear additives to reduce wear regardless of the operating conditions (see Four-Ball Wear Test graph below). AMSOIL MCT is thermally (heat) stable and contains maximum levels of oxidation inhibitor additives. It is extremely resistant to volatility (see NOACK Volatility graph below) and engineered to prevent damaging sludge and carbon deposits for superior engine cleanliness.
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Why Harley owners choose AMSOIL
NEW Line of Premium Motorcycle Filters From AMSOIL
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AMSOIL INC., Superior, WI, has introduced a full line of premium filters specifically designed for motorcycles. AMSOIL SuperDuty Motorcycle Oil Filters reflect the latest technological advances. The spin-on type filters are available in either black or chrome.
AMSOIL SuperDuty Motorcycle Filters are designed to allow the proper volume of oil flow with a minimum degree of restriction while efficiently removing the contaminants that cause wear. AMSOIL filters are comprised of a blend of synthetic, cellulose and glass media, tested to provide superior, reliable overall performance.
AMSOIL SuperDuty Motorcycle Oil Filters offers the following benefits:
- Traps dirt through out media thickness
- More than 75% better combined efficiency/capacity rating
- Heavy duty steel case for rugged performance in extreme conditions
- Prevents oil drainage during engine shutdown
- Double-rolled tuck lock seam prevents leakage in high pressure situations
- Emergency relief valve prevents oil starvation
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