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Which AMSOIL Products Are Recommended
For Your Vehicles?
Modern Two-Stroke Engines Require
Designers Are Relying On Technology That Increases Performance,
But Places More Stress On Motor Oil.
Technical Product Manager,
Like the engine
in your car or truck, the two-stroke engines that power your
snowmobile, chainsaw or outboard motor are growing more sophisticated
with each passing year. The same demands driving changes in
the automotive marKet are influencing two-stoke equipment
as well - the government mandates reduced exhaust emissions,
while consumers want increased fuel economy and more power.
two-stroke engine manufacturer to do? These three areas of
importance - reduced emissions, increased fuel economy and
maximum performance - don't play well together. Given the
constraints of two-stroke engine design, It's extremely difficult
to build an engine that hits all three targets. Because they
don't contain intake and exhaust valves like a four-stroke
engine, controlling emissions in two-strokes is a big challenge.
One strategy in today's oil-injected engines is to adjust
the fuel/oil ratio to use less oil. While this reduces emissions,
it comes at a cost since using less oil increases operating
temperatures and invites several problems.
breaks down the oil and leads to deposits that cause piston
rings to stick, robbing the engine of horsepower and reducing
performance. In extreme cases, stuck rings can score the cylinder
wall and piston skirt, leading to catastrophic failure. To
stand up in this intense environment, modern two-strokes require
oils with improved heat resistance and lubricity to deliver
the necessary level of wear protection.
season gearing up, it's a great time to look at a couple snowmobile
engines that offer examples of the innovation we're seeing
in the two-stroke market. The Arctic Cat* C-TEC* uses electronics
that adjust the fuel/oil ratio depending on operating conditions.
In one promotional Arctic Cat video, we're told to expect
fuel/oil ratios as high as 65:1, depending on conditions,
in the C -TEC2 engine. Less oil means lubrication becomes
more challenging. What little oil is available to protect
critical engine parts must reach components quickly, particularly
in sub-zero cold, and stand up to intense heat and friction
once it's distributed throughout the engine.
The C -TEC uses
an interesting configuration to deliver oil to the wrist pin
and bearing. The fuel/oil mixture is injected into the boost-port
side of the cylinder. At higher rpm, oil is also injected
into the crankcase through a slot in the piston. The setup,
according to Arctic Cat, improves performance, emissions and
The Ski-Doo* E-TEC*
offers another example. Like many cars and trucks today, the
E-TEC uses direct injection. Placing the fuel injectors directly
in the combustion chamber allows precise control over the
injection event, which improves power and reduces emissions.
This arrangement, however, comes with challenges. In a traditional
two-stroke engine, fuel and oil are mixed prior to being ingested
by the engine, which helps the oil flow at lower temperatures
since fuel reduces oil viscosity. In the E-TEC, fuel and oil
are mixed only in the combustion chamber, so the bottom end
of the engine - the crankshaft and rods - are lubricated by
oil alone, making the oil's cold-flow properties critical.
The bottom line
is two-strokes require higher-quality oils than before. In
the snowmobile market specifically, an oil must excel in three
areas: cold-flow, piston protection and exhaust power valve
cleanliness. AMSOIL INTERCEPTOR®, our primary snowmobile
recommendation, is proven to excel in all three areas. In
50 hours of extreme dyno testing, it completely prevented
ring sticking and piston scuffing. It also boasts a -72°F
cold-flow ability. Visit amsoil.com/proof
for complete results.
countless hours in our mechanical test lab, In the field and
on the racetrack fine-tuning our two-stroke oils to deliver
the benefits today's two-stroke engines need. As the two-stroke
market continues to evolve, you can bet we'll continue to
develop and manufacture synthetic two-stroke oils that meet
and even exceed the demands of today's toughest two-stroke
engines, regardless of who builds them. Published, AMSOIL
Cat C-TEC engine injects oil into the crankcase through a
slot in the piston. This setup, according to Arctic Cat, improves
performance, emissions and fuel economy.
AMSOIL Signature Series
Synthetic Motor Oil
AMSOIL Signature Series Synthetic
Motor Oils are formulated to meet the latest API SN Resource
Conserving and ILSAC GF-5 industry specifications. AMSOIL
Signature Series Oils include 0W-20, 0W-30, 5W-30 and 10W-30
and represent the very best motor oils AMSOIL has to offer,
allowing motorists to take advantage of maximum extended drain
intervals. AMSOIL Signature Series Synthetic Motor Oils are
recommended for drain intervals of up to 25,000 miles/one
year, whichever comes first (15,000 miles/one year in severe
here for more information
Synthetic Motor Oils offer the longest drain intervals
on the market, unsurpassed protection and performance that
effectively extends equipment life and improved fuel economy,
saving customers money at the pump and reducing the nation's
dependence on foreign oil.
The Presidents Desk
Synthetic Diesel Oil Articles and Testimonials
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."
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.
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.
NOACK Volatility Test
Volatility Test determines the evaporation loss
of lubricants in high temperature service. The more
motor oils vaporize, the thicker and heavier they become,
contributing to poor circulation, reduced fuel economy
and increased oil consumption, wear and emissions. AMSOIL
Synthetic Motor Oil resists high temperature volatization
better than other motor oils. AMSOIL Synthetic Motor
Oil maintains peak fuel efficiency and reduces oil consumption
AMSOIL Now An ISO Certified
received ISO 9001:2000 certification of our Quality Management
System (QMS). NSF International Strategic Registrations is
the registrar that has verified our QMS meets the requirements
of the ISO 9001:2000 standard, the most widely utilized quality
standard throughout the world for quality management systems.
ISO standards are used by over 300,000 companies worldwide
setting rigorous standards for businesses, government and
is applicable to any manufacturing and service organization
providing a framework for system development that focuses
on the customer, quality system performance and ongoing improvement.
AMSOIL received ISO 9001:2000 registration under the scope:
synthetic lubricants blending, packaging, and other fulfillment
directly associated with lubricant product.
certification puts AMSOIL in line with some of the most efficient
companies in the world. It is further assurance that the products
and services AMSOIL provides will continue to maintain the
high level of quality the company always demanded.
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