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WHY HARLEY OWNERS CHOOSE AMSOIL
Wear Test Comparison - AMSOIL vs. Harley Screamin'
The recent introduction
of Screamin' EagleŽ Synthetic Lubricant by Harley DavidsonŽ 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
For the past 20 years, Harley-DavidsonŽ has claimed its petroleum-based
Genuine H-D Oil is best for the "unique requirements of Harley-DavidsonŽ
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-DavidsonŽ engines. In fact, Four-Ball Wear Tests
show Harley-DavidsonŽ 20W-50 Motorcycle Oil leaves a wear scar over
50 percent larger than that left by AMSOIL Synthetic 20W-50 Motorcycle
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-DavidsonŽ
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-DavidsonŽ motorcycles is subject
to very high temperatures. Being air-cooled, Harley-DavidsonŽ 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-DavidsonŽ 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
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-DavidsonŽ and is the only synthetic product TESTED and
CERTIFIED by Harley-DavidsonŽ engineering for use in HD/Buell motorcycles."
Although this is necessary marketing hype, Harley-DavidsonŽ V-twin
air-cooled engines are not unique in their lubrication requirements
and do not require a special Harley-only fluid. There is nothing
about Screamin' EagleŽ Synthetic Motorcycle Oil that sets it apart
from, or makes it better than, many other synthetic motorcycle oil
formulations, except that Harley-DavidsonŽ is marketing it and directly
profiting from the sales.
According to Harley-DavidsonŽ, one of the unique benefits offered
by Screamin' EagleŽ 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-DavidsonŽ motorcycles, including Evolution XL, Evolution
1340, Twin Cam 88 and 88B, 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' EagleŽ Synthetic Motorcycle Oil measure up to
AMSOIL in wear protection? Four-BallWear Test
results indicate that AMSOIL Synthetic Motorcycle Oil still provides
the best protection possible for motorcycles. In fact,
Screamin' EagleŽ 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' EagleŠ Synthetic Motorcycle
Oil, it also delivers greater value. Suggested retail price of Screamin'
EagleŽ is nearly $2 a quart higher than AMSOIL 20W-50 Motorcycle
Oil. And because AMSOIL Synthetic Motorcycle Oil may be used for
extended drain intervals of up to twice the manufacturer's suggested
interval, while Screamin' EagleŽ is recommended for standard drain
intervals. AMSOIL customers realize additional savings.
Harley-DavidsonŽ claims Screamin' EagleŽ 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 30 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.
AMSOIL Synthetic Motorcycle Oils:
Reduce operating temperatures.
Keep engines clean and deposit-free.
Provide maximum protection against wear.
Formulated without friction modifiers for smooth performance.
Saves money with extended drain intervals of up to
two times the manufacturers' recommendations.
is the undisputed leader in synthetics.............
Since 1972, AMSOIL Synthetics have proven to be the
BEST. AMSOIL also engineers and manufactures Super Duty Oil filters which have a
12,500 mile service life as well as specialized filtration systems for
commercial and fleet applications in cars and light, medium and heavy trucks
which can filter particles down to less than one micron ( a standard full flow
oil filter can only filter to 20-25 microns with any degree of efficiency) making oil changes virtually unnecessary and virtually eliminating engine wear.
These filters have been proven by millions of miles of over-the road trucks,
construction equipment and fleet service.
AMSOIL saves you time and money.
The only 25,000 mile/one- year and 35,000/one-
year motor oil in the world.
Exceeds the most stringent performance
specifications of all major U.S. and foreign automotive and truck
Provides up to two-times the wear protection of
other motor oils.
Increases the life of your vehicle.
Improves performance, fuel economy and
Diesel oil and filtration products designed to
deliver 1,000,000 miles for over-the-road trucks before engine overhaul.
Used by many national racing teams, fleets,
police departments, construction firms and trucking companies.
Oilsnmore.com is comprised of a group of highly skilled team of Engineers and Lubrication and
Filtration Specialists. You too, can join our group when you become an AMSOIL
Dealer and take advantage of all that we offer as you use products in your own
vehicles or begin your own AMSOIL business. You won't find a more knowledgeable
and skilled group of Dealers anywhere which is very important when you need
support as you build your business.
In addition, as a Dealer in our group you will receive exclusive unlimited
product, technical and business support from the only group of Truck and
Automotive Engineers and Lubrication Specialists on the net.
We do not only run our business on the internet. We also have numerous
commercial, industrial, trucking, excavating, construction, logging, police,
racing and many more accounts that we support and service on a regular basis. We
have several fully stocked warehouses and fully equipped shop facilities. This
provides us with excellent knowledge of the products, equipment and the business
and the ability to respond immediately to any of your needs.
We will use this
knowledge and experience to help you get started so you too can achieve your
We possess the skills, desire and knowledge to answer questions, solve problems,
improve efficiency, reduce downtime, maintenance costs and increase the
durability and life of all of your vehicles.
Read what our satisfied customers have to say about us. Read through our
website. Contact us with any questions. If you decide to become an AMSOIL Dealer
you will be joining, in our opinion, the most skilled AMSOIL group there is. We
will help you get started and provide you with the tools and information in
order to be successful in this business or with technical and product assistance
to use AMSOIL products in your own vehicles.
We offer several options to receive information on AMSOIL. We welcome the
opportunity to work with your personally as your servicing AMSOIL Dealer. Our
AMSOIL Dealer Group is led by a Truck/Automotive Engineer and Lubrication
Specialist with over 18 years experience. This exceptional benefit is
Please, email us at
we will send you an exclusive
comprehensive package of product, technical and business information.
If you are
serious about AMSOIL products and the business opportunity this is the best
option. You will receive extensive technical and business support from both
myself and my Direct Jobber, a Detroit, Michigan Truck/Automotive Engineer and
Lubrication Specialist with over 19 years experience. We look forward to helping
you learn about AMSOIL.
Or for a smaller, very general information package (which includes a catalog and
Dealer application) you can request information via any of the links below.
To request a FREE Factory Direct Catalog
For Information on Becoming an AMSOIL Dealer
To Buy AMSOIL Products in the AMSOIL On-Line Store
To Sell AMSOIL in Your Store or Purchase For Use in
Your Businesses Equipment
To visit the AMSOIL Corporate Website for Product
and Business Opportunity Information
AMSOIL is Proudly Made in the U.S.A.
AMSOIL is America's Oil.
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