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Harley Davidson Oil and The Low Quality of OEM Motorcycle Oils

Harley-Davidson Recommends That You Use Their "Genuine" H-D Motorcycle Oil, But Harley-Davidson DOES NOT Make Their Own Motorcycle Oil.

Also, In Industry Standard Four-Ball Wear Testing (ASTM D-4172), Harley-Davidson's Screamin' Eagle Syn3 Produces the Second Largest Wear Scar vs. Other Leading Motorcycle Oils.

Click Here To See Test Results

OEMs Including Harley-Davidson and Honda Inflate Price of Inferior Lubes to Profit From Consumer Assumptions of Quality

Original equipment manufacturers (OEMs) typically recommend their own brands of motor oils and lubricants for their equipment. Consumers believe those "brand name" lubes are the best for the motorcycles, snowmobiles, ATVs, outboard motors and other recreational equipment they buy.

"Consumers often operate under the premise that the manufacturer not only knows what's best for the equipment but also provides the best," said Dave Anderson, AMSOIL technical product manager. "Their impression is that the OEM oils are always the best, and in many cases nothing could be further from the truth." Anderson has more than 25 years of experience at AMSOIL and has conducted numerous comparison tests throughout that time.

Consumers falsely assume OEMs actually manufacture the oils and lubes that carry their brand name.

However, OEMs typically buy low-cost and sometimes low-quality oils from lubricant manufacturers, put their labels on them and send them out for distribution at dealerships.

"Manufacturers can command higher prices simply because the consumer perceives it to be more appropriate for the application," Anderson said.

Contrary to consumers perception, research indicates OEM lubes often aren't equal to the performance quality of the cheapest aftermarket oils on store shelves.

"Manufacturers probably do know more about the equipment," Anderson said. "If indeed they know what's best for their product, their lubricants should outperform - or at least meet the performance levels of - the other products out there. But results show that in most cases OEM oils were inferior to others."

Consumers are sometimes let to believe that using any other oils or lubricants will void their factory warranties.

The federal Magnuson-Moss Act of 1975 was enacted to protect consumers. It says in part: "No warrantor of a consumer product may condition his written or implied warranty of such product on the consumer's using, in connection with such product, any article or service (other than article or service provided without charge under the terms of the warranty) which is identified by brand, trade or corporate name." - United States Code, Title 15, Chapter 50, Section 2302 (c).

4-Ball Wear Protection Test (ASTM D-4172)

The ASTM D-4172 4-Ball Wear Test determines an oil's ability to minimize wear in case of metal-to-metal contact.

Four steel balls are placed in the test oil with one held in place and rotated under a prescibed load and temperature against the other three.

After a one-hour period of constant load, speed and temperature, the lower three balls are inspected at the point of contact. Wear appears as a single scar on each of the balls. The lower the average scar diameter, the better the wear protection of the oil.

AMSOIL 20W-50 Synthetic Motorcycle Oil (MCV) offers significantly better wear protection than competing OEM motorcycle oils.

The High Temperature/High Shear Test measures an oil's viscosity (thickness) at high temperatures under shearing forces. Shear stable oils that are able to maintain high viscosity at high temperatures perform well in the HTHS Test. The test combines viscosity, shear stability and viscosity index. It's important because bearings require the greatest level of protection during high temperature operation. The higher the test result, the greater the level of protection offered by the oil.

AMSOIL 20W-50 Synthetic Motorcycle Oil significantly outperformed competing OEM motorcycle oils in High Temperature/High Shear Testing.

"In order for AMSOIL to do our job properly, we have to have an intimate knowledge of the products it's going to be used in," Anderson said. "We focus on the lubrication needs. We know more about how to meet those needs because that's our job. We make the best motor oils and lubricants - that's what we do."

Why Harley-Davidson Owners Choose AMSOIL

Wear Test Comparison - AMSOIL vs Harley-Davidson Screamin' Eagle Syn3 Synthetic Motorcycle Oil

The recent introduction of Screamin' Eagle® Synthetic Lubricant by Harley-Davidson® indicates the Motor Company has finally recognized the benefits of running synthetic motorcycle oil in their air-cooled engines. After years of advising dealers and customers to avoid using synthetic oils in their bikes, it's natural to wonder why the company is suddenly marketing one.

For the past 20 years, Harley-Davidson® has claimed its petroleum-based Genuine H-D Oil is best for the "unique requirements of Harley-Davidson® air-cooled V-twin engines." However, laboratory testing has consistently revealed that Genuine H-D Oil does not provide the best protection possible for Harley-Davidson® engines. In fact, Four-Ball Wear Tests show Harley- Davidson® 20W-50 Motorcycle Oil leaves a wear scar nearly 80 percent larger than that left by AMSOIL Synthetic 20W-50 Motorcycle Oil.

One of the major benefits of running a synthetic motorcycle oil is its resistance to oxidation and thermal degradation, which inhibit the formation of sludge and deposits that contribute to increased wear. In the past, Harley-Davidson® has defended use of its Genuine H-D Oil by arguing that oil breakdown in extreme heat is a non-issue because extreme heat conditions are not normally faced by motorcycle engines, while the superior cold-temperature benefits of synthetics also don't apply to Harleys.

The fact is, engine oil in Harley-Davidson® motorcycles is subject to very high temperatures. Being air-cooled, Harley-Davidson® engines get especially hot while idling in traffic, commonly reaching temperatures up to 240 degrees Fahrenheit. As heat and oxidation increase, so does viscosity, adversely affecting the lubricating qualities of the oil and increasing wear.

The water, soot and acid byproducts of combustion also contribute to deposit formation. Harley-Davidson® has stressed the importance of regular oil changes in order to remove these contaminants. Of course, promoting regular oil changes is also a good way to promote using petroleum-based Genuine H-D Oil. High-quality synthetic oils formulated with high-performance additives effectively withstand such contaminants, allowing motorcyclists to safely extend drain intervals.

In support of their about-face and the introduction of a synthetic oil, Harley maintains that "the Motor Company has never supported the use of synthetic products in our vehicles because there has never been any test validations completed on the numerous formulations in HD/Buell motorcycles. This product has been exclusively designed for Harley-Davidson® and is the only synthetic product TESTED and CERTIFIED by Harley-Davidson® engineering for use in HD/Buell motorcycles."

Although this is necessary marketing hype, Harley-Davidson® V-twin air-cooled engines are not unique in their lubrication requirements and do not require a special Harley-only fluid (see letter from Harley-Davidson). There is nothing about Screamin' Eagle® Synthetic Motorcycle Oil that sets it apart from, or makes it better than, many other synthetic motorcycle oil formulations, except that Harley-Davidson® is marketing it and directly profiting from the sales.

According to Harley-Davidson®, one of the unique benefits offered by Screamin' Eagle® Synthetic Motorcycle Oil is its versatility. For the first time the company is recommending an oil that can be used in the engines, primary chaincases and transmissions of most Harley-Davidson® motorcycles, including Evolution XL, Evolution 1340, Twin Cam 88 and 88B, Twin Cam 96, Revolution and Buell models. This feature, however, is not unique. AMSOIL 20W-50 Synthetic Motorcycle Oil may also be used in the engines, primary chaincases and transmissions of these applications, providing superior lubricating protection in each component.

How does Screamin' Eagle® Synthetic Motorcycle Oil measure up to AMSOIL in wear protection? Four-Ball Wear Test results indicate that AMSOIL Synthetic Motorcycle Oil still provides the best protection possible for motorcycles. In fact, Screamin' Eagle® Synthetic Motorcycle Oil leaves a wear scar nearly 80 percent larger than AMSOIL 20W-50 Synthetic Motorcycle Oil.

Not only does AMSOIL Synthetic Motorcycle Oil offer greater wear protection than Screamin' Eagle® Synthetic Motorcycle Oil, it also delivers greater value. Because AMSOIL Synthetic Motorcycle Oil may be used for extended drain intervals of up to twice the manufacturer's suggested interval, while Screamin' Eagle® is recommended for standard drain intervals, AMSOIL customers realize additional savings.

Harley-Davidson® claims Screamin' Eagle® Synthetic Motorcycle Oil has been "exclusively designed" for use in their motorcycles, pointing to extensive bench testing and over 230,000 miles of durability testing to back it up. AMSOIL INC. has over 35 years of experience providing superior lubricating protection for all brands of motorcycles, and AMSOIL Synthetic Motorcycle Oils have been tested in millions of over-the-road miles. Testimonials from countless motorcyclists further demonstrate the superiority of AMSOIL Synthetic Motorcycle Oils.

Formulated with top-of-the-line synthetic base stocks and high-temperature deposit control additives, AMSOIL Synthetic Motorcycle Oils provide superior protection and performance for motorcycles in all operating conditions. AMSOIL Motorcycle Oils effectively withstand oxidation and thermal degradation, keep wear to an absolute minimum, hold contaminants in suspension and keep engines running cool and clean.

Visit this page to get important information about AMSOIL Synthetic Motorcycle Oil.

The AMSOIL Motorcycle Oil Study compares the test results of 26 different motorcycle oils in the most critical areas of motorcycle oil performance, including wear protection, shear stability and rust protection, helping consumers make educated decisions regarding which oil to use in their motorcycles.

Download the Motorcycle Oil Study to see all the test results.

Merch Performance Recommends AMSOIL Synthetic Motorcycle Oil for its V-Twin Engines

Merch Performance, world renowned for their award winning V-twin engine development - recommends AMSOIL 20W-50 Synthetic Motorcycle Oil.

Merch engines are available in a number of sizes and power ratings, starting at the 100 c.i. Stage I “Fatso” that offers 90 hp and 98 ft/lbs at the rear wheel, to the enormous 131 c.i. Stage III that pumps out 140 hp and 150 ft/lbs at the rear wheel.

The carefully crafted high performance V-twin engines manufactured by Merch Performance require a premium high performance lubricant. The company recommends AMSOIL 20W-50 Synthetic Motorcycle Oil. AMSOIL Synthetic Motorcycle Oils offer unparalleled protection and performance, keeping wear to an absolute minimum, reducing operating temperatures and keeping engines clean and deposit-free.

AMSOIL Motocycle Oil for Harley-Davidson

A situation my daughter, Lyn, told me about recently got me to thinking about how good it is to be able to blend our own oils and have complete control of our own product quality.

Lyn loves to ride motorcycles. She recently purchased a Harley-Davidson bike and took it to the local Harley shop to have our new AMSOIL Motorcycle Oil installed. The mechanic took issue with her not using the oil Harley-Davidson sells, saying, "I'll use AMSOIL motor oil when AMSOIL starts making motorcycles!"

How would you answer a challenge like that? I was pleased to hear Lyn's response. She said, "I'll start using Harley-Davidson motor oil when Harley starts making oil!"

Perfect! The fact is that Harley-Davidson, like so many other "brands" of oil, contract with one or more oil companies to make their lubricants. Often, the decision as to who actually makes a private labeled product is based on low bid, and like almost everything manufactured by a low bidder, short cuts are taken in order to meet the low price.

I understand that Harley-Davidson has contracted with one company for a number of years to make their oil. That's good, but it doesn't change the fact that they make motorcycles, not oil. Now consider all the other private label oils out there. Every manufacturer that makes equipment with an engine has its own name on an oil bottle. That includes all the major auto manufacturers, the makers of motorcycles, ATV's, snowmobiles, lawnmowers, farm equipment, you name it, they all have oils. But none of these equipment manufacturers actually make an oil. They sell oil to make more money, and they often price these oils well above the going rate for competitive lubricants because, like Harley-Davidson, they can specify or create the impression that only their oil be used in their equipment.

Now there's nothing wrong in having a goal to make money, but let's get real here. Why would anyone want to use a product manufactured down to a price rather than a product manufactured up to high quality standards? We have tested a number of these private label motor oils and two-cycle oils and we found many are mediocre quality products. None of them even comes close to performing as well as AMSOIL lubricants, and that's a fact!

I'm not taking shots at Harley-Davidson. They make good motorcycles (although I liked my Goldwing better). And I understand their concern that normal automotive oils not meeting API C specs shouldn't be used in their bikes. But when they imply that AMSOIL Motorcycle Oil is not as good as their brand or I hear that one of their dealers recommended not using AMSOIL, I get a little hostile. Thise kinds of statements are the very reason we introduced our motorcycle oils in the first place. And when we say use our 20W-50 motorcycle oil in V-Twin motorcycle engines, that definately includes Harley-Davidson motorcycles!

Our Motorcycle Products Brochure, G-391, includes wear comparisons of AMSOIL Motorcycle Oils vs other oils, including H-D "Genuine." Both our oils demonstrate superior wear protection over all other tested brands. Interestingly enough, the highest wear scar in this test turned out to be Harley-Davidson's own "Genuine" oil!"

There is a good reason why AMSOIL Motorcycle Oils protect so well against wear. They are formulated with significantly higher levels of zinc and phosphorus, which when included in proper formulation with other high quality additives, provide superior wear protection at the high operating temperatures typical of motorcycles. In addition, synthetic oils inherently reduce sump temperatures so the engines actually run cooler.

The fact is, Harley would do well to have AMSOIL make their oils for them. Then they could be assured that their oil was indeed a superior product. As it is, there may be absolutely nothing wrong with their oil for use in average service, but I guarantee you that as the oil temperature gets hotter, like it does when sitting in traffic on asphalt on a hot summer day, the Harley-Davidson with AMSOIL in the crankcase is going to be far better protected and run far cooler than the bike with H-D "Genuine" oil in it. There's just no two ways about it!

So, my daughter Lyn will be going back to this mechanic armed with the facts about AMSOIL Motorcycle Oils and a few facts about H-D oil. Nobody's going to tell her that her dad's oils are not the very best. She knows better, and she's on a mission to prove her point. Who knows? Knowing Lyn, she might sign up another AMSOIL Dealer in the process!

A. J. "Al" Amatuzio
President and CEO, AMSOIL INC.

AMSOIL High Performance Synthetic Motorcycle Oils

Superior Wear Protection for Motorcycles

Run cooler! Reduce crankcase temperature. AMSOIL Synthetic Motorcycle Oils deliver maximum protection, power and fuel efficiency for all makes of motorcycles. Recommended for all V-Twin and other motorcycle engines. Superior 12+ TBN synthetic formulation provides long service life and maximum protection against engine wear. Superior anti-wear and detergent/dispersant packages. AMSOIL Synthetic Motorcycle Oils contain no friction modifiers and are wet clutch compatible.

AMSOIL SAE 20W-50 Synthetic Motorcycle Oil 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. Product Code: MCV See product application notes for Harley Davidson Motorcycles

Product Description
AMSOIL Synthetic 20W-50 Motorcycle Oil (MCV) is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. AMSOIL MCV is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high temperatures of air-cooled engines such as Harley Davidson® V-Twin, wet clutch lubrication, extreme pressure regions of gears and chains and rust common to short trips and storage.

AMSOIL MCV 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 on reverse). AMSOIL MCV 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.

20W-50 Motorcycle Oil High Temperature Viscosity Protection Higher values reflect better film strength ASTM Test Method D-4683 March 16, 2005	20W-50 Motorcycle Oil Wear Comparison ASTM Test Method D-172 March 16, 2005

Provides Extreme Pressure Quality Protection for Gears
With AMSOIL MCV, there is no need for separate transmission or primary chaincase lubricants. It is absolutely shear stable and will not thin out from mechanical activity. AMSOIL MCV performs like a gear lube without the negative effects of extreme pressure additives. In the FZG gear test, AMSOIL MCV achieved a perfect score with a “zero” wear rating (see photos below).

FZG Gear Test (ASTM D-5182) AMSOIL 20W-50 (MCV)	FZG Gear Test (ASTM D-5182) Motul 300 V 15W-50

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, 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 MCV 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 20W-50 (MCV)	Rust Test ASTM D-1748 Castrol GPS 20W-50

Provides Excellent Wet Clutch Performance
AMSOIL MCV contains no friction modifiers and promotes smooth shifting and positive clutch engagement. AMSOIL MCV 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 20W-50 Motorcycle Oil is recommended for air or liquid cooled 4-stroke engines. It meets SAE 90, API GL-1 gear oil requirements and is recommended for transmissions and primary chaincases. AMSOIL MCV is recommended for Harley Davidson®,
Buell®, Victory®, Ducati®, Aprilia®, BMW®, Triumph® and other motorcycles where 15W-50 or 20W-50 engine oils or SAE 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 20W-50 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.

AMSOIL Motorcycle Oil Filters

AMSOIL Shock Therapy Synthetic Fork/Suspension Fluids

AMSOIL Motorcycle Air Filters

AMSOIL Harley-Davidson Oil Recommendation Chart

AMSOIL 20W-50 Synthetic Motorcycle Oil Product Data Sheet

Motorcycle Testimonials

AMSOIL Motorcycle Oil Filters AMSOIL Motorcycle Oil Filters reflect the newest technological advances in the quest to meet the unique demands of today’s high-stress motorcycle engines. (more info)

The AMSOIL Advantage
Motorcycle manufacturers want the best protection possible for their equipment, calling for rugged oils that exhibit high-temperature deposit control additives. AMSOIL Synthetic Motorcycle Oils are specially formulated with the best synthetic basestocks and high-performance additives to provide tough lubricating protection for all four-cycle motorcycle and ATV engines in the most demanding operations.

AMSOIL Motorcycle Oils are formulated for both water-cooled engines and the unique demands presented by air-cooled V-twin motorcyle engines, including Harley-Davidson. Conventional petroleum oils break down and oxidize when faced with high temperatures, such as those experienced when idling in traffic, contributing to the formation of deposits, sludge and varnish. AMSOIL withstands oil breakdown and oxidation in high temperatures, holds contaminants in suspension and keeps engines running cool and clean.

Zinc and phosphorus additives are extremely important to engines faced with high-pressure conditions, especially motorcycle engines, which typically have steep cam slopes, creating high pressure between the parts. In motorcycles, friction modifiers (prevalent in automotive oils) have been attributed to engine start failures, a rough running feel, increased fuel consumption due to higher engine stall speeds and other problems. AMSOIL Synthetic 10W-40 and 20W-50 Motorcycle Oils have beefier antiwear and detergent/dispersant packages with no friction modifiers, keeping motorcycles running smoothly and efficiently, while allowing for extended drain intervals of up to twice the manufacturers' recommendations.

AMSOIL Synthetic Motorcycle Oils contain significantly higher levels of zinc and phosphorus than competing oils, and while simply adding more zinc and phosphorus doesn't insure good performance, AMSOIL has formulated motorcycle oils with the best additives in the optimal quantities to provide superior wear protection.

A Four-Ball Wear Test was conducted at 302°F/150°C, a higher temperature that would typically be associated with motorcycle oil operating temperatures in extreme high-performance situations. AMSOIL Motorcycle Oils protect better in higher temperatures than any of the tested motorcycle oils do, leaving a wear scar up to 80 percent smaller.

Victory Motorcycle Claims Mileage First With AMSOIL Synthetic Oil

Tim Werder, Shawangunk, New York, has the world's highest mileage Victory V92C cruiser and has riden more than 100,000 miles on his Polaris made 1999 Victory V92C motorcycle with the help of AMSOIL Synthetic Motorcycle Oil. (read article)

AMSOIL Synthetic Motorcycle Oil Impresses Harley Riders

Although Harley-Davidson Motorcycle Company routinely tells its customers they must use “Harley-specific” motor oils and lubes, some riders are realizing AMSOIL motorcycle oil keeps the popular bikes running cooler and smoother.

Jim Murphy and Jim White, partners at a Lehman Trike Conversion business in Martinsburg, W. Va., spread the word that AMSOIL makes the best products – even for Harleys. (read article)

Harley Gets New Life With AMSOIL

Roy Goyette, Naples, Florida, took advantage of the advanced technology of AMSOIL synthetic motor oils and lubricants to breathe new life into a beat-up old Harley. Goyette got started on the project in May 2006 when a good friend asked him to restore the old Harley. "I was told that it was an old 165 Harley that had been stored for many years." Goyette said.

"I use AMSOIL products all the way through the bike," Goyette said. "I used the Synthetic Water Resistant Grease, HP Injector 2-Cycle Oil in a premium-mix form, SAE 10W-40 Synthetic Motorcycle Oil in the transmission, Heavy Duty Metal Protector for the chain, Metal Protector in lots of areas and Mothers Products on the final build. Thanks for a great line of products." (read article)

Harley Expert Uses AMSOIL For All Applications

Don “Woody” Wood, Livermore Falls, Maine, knows Harley-Davidson motorcycles. He’s been riding and racing “Hogs” for over 42 years; building, repairing and modifying them for more than 30.

He owns Doc Wood’s V-Twin Motorcycle Works, LLC, and is an expert when it comes to Harleys.

He owns five Harleys, including a Harley drag racing bike. They’re all run exclusively on AMSOIL motor oils and lubes.

“AMSOIL is just the best oil you can run in your bike,” he said.

"In my opinion, God created AMSOIL for the Harley-Davidson Motorcycle," said Doc. (read article)

Merch Performance Recommends AMSOIL Synthetic Motorcycle Oil for its V-Twin Engines

Merch Performance of Red Deer, Alberta Canada is world renowned for their award winning V-twin engine development. In fact, they won 2002 Performance Product of the Year and have a rock solid reputation in the business for aesthetics and reliability.

Merch engines are available in a number of sizes and power ratings, starting at the 100 c.i. Stage I “Fatso” that offers 90 hp and 98 ft/lbs at the rear wheel, to the enormous 131 c.i. Stage III that pumps out 140 hp and 150 ft/lbs at the rear wheel.

The carefully crafted high performance V-twin engines manufactured by Merch Performance require a premium high performance lubricant. The company recommends AMSOIL 20W-50 Synthetic Motorcycle Oil. AMSOIL Synthetic Motorcycle Oils offer unparalleled protection and performance, keeping wear to an absolute minimum, reducing operating temperatures and keeping engines clean and deposit-free. (read article)

Dear AMSOIL,

I wanted to let you know how happy I am with your AMSOIL 20W-50 Synthetic Motorcycle Oil. I own a 2006 Harley-Davidson Sportster with 5,000 miles on it. Since the bike was new I've only used Harley-Davidson oil in the engine and Sportster gear lube in the transmission and primary chaincase.

After reading your "Study of Motorcycle Oils" I decided to switch to AMSOIL. That was the best thing I've ever done for my Harley-Davidson.

From day one I have had problems down-shifting, especially when the bike was cold. It would hang up between gears and I couldn't get it free before the light at the signal turned green. Very dangerous.

Harley-Davidson told me it was not broken in yet and to stop "granny shifting."

After 5,000 miles it was still doing it. Now, after I started using AMSOIL in my engine and transmission, the problem has ceased completely from the minute I put it in. No matter how easy I down-shift I can't make it hang up between gears.

Thank you so much for your incredible oil. I'll never use any other brand again.

Billy Guiles
New AMSOIL User

AMSOIL Synthetic Motorcycle Oil Information

click on the following links to get important AMSOIL information

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AMSOIL Online Store

Buy AMSOIL at Wholesale Prices

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AMSOIL Synthetic 10W-40 Motorcycle Oil

AMSOIL Synthetic 20W-50 Motorcycle Oil

AMSOIL Motorcycle Oil Filters

AMSOIL Motorcycle Air Filters

Motorcycle Application, Filter and Spark Plug Lookup

Harley-Davidson Oil Application and Recommendations

Downloadable AMSOIL Brochures and Information - PDF Files

AMSOIL Product Catalog

AMSOIL Synthetic 10W-40 Data Bulletin

AMSOIL Synthetic 20W-50 Data Bulletin

AMSOIL Motorcycle Products Brocure

Absolute Filtration for Motorcycles

AMSOIL Wholesale Price List

AMSOIL Dealer Application

AMSOIL Change Interval Chart

The AMSOIL Motorcycle Oil Study compares the test results of 26 different motorcycle oils in the most critical areas of motorcycle oil performance, including wear protection, shear stability and rust protection, helping consumers make educated decisions regarding which oil to use in their motorcycles. There is no hype, no sales pitch, just facts. Never before has so much information on motorcycle oils been delivered in one easy-to-understand source.

Download the Motorcycle Oil Study to see all the test results.

AMSOIL Wholesale Price List

UNITED STATES WHOLESALE PRICE LIST

CANADA WHOLESALE PRICE LIST

Download an AMSOIL wholesale price list to see how much you can save as a Dealer or Preferred Customer. Dealers and Preferred Customers pay the same low price. Dealerships are recommended for people who would like to build a business reselling AMSOIL products. Preferred Customer Memberships are recommended for people who would like to buy at wholesale prices for their personal use but are not necessarily interested in building a business.

Preferred Customers Memberships can be purchased online by clicking here.

Dealers must register by printing out an application and mailing in to AMSOIL Inc:

AMSOIL Inc., AMSOIL Building, Superior, WI 54880.

AMSOIL Dealer Application

UNITED STATES DEALER APPLICATION

CANADA DEALER APPLICATION

These Dealer Applications are PDF files that you can print or download to your computer.

Complete the application and mail it to:

AMSOIL Inc., AMSOIL Building, Superior, WI 54880.

You will receive your dealer welcome packet in about 10 days. The dealer packet contains everything you will need to start ordering AMSOIL at wholesale prices, including a wholesale price list.

"AMSOIL INC. warrants that the use of its lubricants will not cause mechanical damage to any mechanically sound equipment when AMSOIL INC. products are used in full compliance with the company's recommendations and instructions."

FULL WARRANTY

AMSOIL synthetic motor oils are formulated to surpass engine test specifications, offering protection far greater than competing motor oils for extended drain intervals. Most synthetic oil manufacturers make no claim to extended drain intervals, deferring to the maintenance schedule provided by the vehicle manufacturer. With its unparalleled oil and warranty program, AMSOIL offers consumers unprecedented protection and economics.

Another AMSOIL First

More than 20 years ago, AMSOIL began using the NOACK volatility test as a comparison tool and measurement of quality. Back then, nearly every oil tested side-by-side with AMSOIL synthetic motor oils failed, and those that passed barely squeaked by. Other oil companies paid no attention to NOACK results until Ford Motor Company made it a requirement for service fill oils, validating what AMSOIL had said all along.

Which AMSOIL Products Are Recommended For Your Car or Truck?
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I welcome the opportunity to work with you personally as your servicing AMSOIL Dealer. Use the information on this website to contact me. You may also check out the AMSOIL Corporate Website for product and business opportunity information.

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