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AMSOIL vs. Mobil 1

409,000-Miles Without An Oil Change

AMSOIL Excels in API Sequence IIIF Performance Test

Motor Oil Performance Tests & Comparisons

Temperature Extremes Call For Superior Motor Oils

Why Harley-Davidson Owners Choose AMSOIL

Synthetic Motorcycle Oil & Harley-Davidson Warranty Issues

AMSOIL Synthetic Gear Lube Outperforms Valvoline Gear Lube

Motor Oil Test and Comparison

8.2% More MPG With AMSOIL Synthetic Lubricants

AMSOIL Proves Superior In Clark County Field Test

AMSOIL Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil is Correct Choice for Jeff Foster Trucking

AMSOIL Products Improve Efficiency and Reduce Operating Costs for Gerlach Trucking

What is the Noack Volatility Test?

What is the Four-Ball Wear Test?

What is TBN?

Articles




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A Look at Snowmobile Exhaust Power Valves
Mounted in the exhaust port of certain snowmobile models, exhaust power valves are devices designed to improve combustion efficiency at varying RPM. Improved efficiency increases horsepower and lowers exhaust emissions.

Snowmobile Exhaust Power Valves

At low RPM the valves are in a closed position, allowing for more efficient combustion and minimizing the levels of unburned gases escaping down the exhaust port. At high RPM the valves are in an open position, allowing the motor to breathe more freely and improving the scavenging effect needed for efficient performance in two-cycle motors.

Because exhaust power valves are located in the direct stream of exhaust flow, deposits consisting of soot, carbon and ash quickly accumulate, requiring the valves to be cleaned regularly. If they are not cleaned, they may get stuck, and operators will notice a considerable power loss and/or bog-type operation.

Snowmobile Exhaust Power Valve with Deposit Build-Up
Clean Snowmobile Exhaust Power Valve
Exhaust power valve with deposit build-up
Clean exhaust power valve

In some instances, deposit build-up may be worse than others. There are several reasons for this:

The machine may be consuming more oil than is needed. Oil injection pumps vary the amount of oil injected based on the throttle position. As the throttle is opened, oil consumption increases. AMSOIL 2-Cycle Oils are recommended for use at 50:1 mix ratios, but if the sled is consuming more than one quart of oil per 12 gallons of gas, it is exceeding an average mix ratio of 50:1. The less oil the sled burns, the fewer the deposits that accumulate on the exhaust power valves. If you wish to have a sled's oil injection pump setting checked, AMSOIL recommends bringing it to a local dealership so a qualified snowmobile mechanic can make the correct adjustments.

Another contributing factor to excessive deposit build-up is riding style. Snowmobiles operated at low speeds and/or steady RPM for extended periods of time will accumulate deposits more quickly than snowmobiles operated at higher speeds. Two-cycle motors do not operate at maximum efficiency at slower speeds, causing a large percentage of unburned fuel and oil to exit through the exhaust. This unburned material accumulates on exhaust valves and forms deposits. Also, since snowmobiles operated at low-level constant RPM do not frequently actuate the valve, it allows deposits to form more rapidly, requiring more frequent valve maintenance.

Snowmobiles run at higher RPM operate more efficiently and can extend time between valve cleanings. Efficient operation results in increased combustion temperatures and more complete burning of the oil/fuel charge. Higher RPM also means the exhaust power valve is more frequently actuated, disrupting deposits and slowing down their accumulation.

Finally, the type of two-cycle oil used in a snowmobile can improve valve cleanliness and extend maintenance. Because they effectively fight deposit formation, AMSOIL Synthetic 2-Cycle Oils exhibit better overall performance than petroleum two-cycle oils. AMSOIL Synthetic 2-Cycle Oils also resist friction and heat more effectively, burn cleaner and can safely be used at 50:1 mix ratios.

Routine maintenance is important for snowmobiles equipped with exhaust power valves. However, maintenance can be eased through the following:

Extending time between cleanings through the use of AMSOIL 2-Cycle Oils

Monitoring and adjusting oil consumption as needed

Cleaning the valves before they get stuck to allow for easier removal

Using AMSOIL Power Foam to loosen the deposits





Related Article: 2-Cycle Engine Applications and Lubrication Needs


AMSOIL Leads the Way in Two-Cycle Oil Technology

New AMSOIL 2-Cycle Oils provide second-to-none protection and performance in modern two-cycle equipment

Two-cycle engines remain the workhorses in recreational equipment, including outboard motors, motorcycles, snowmobiles and personal watercraft, as well as in lawn and garden applications like lawn mowers and weed eaters. Design changes over recent years have included direct fuel injection engines, in which fuel is injected directly into the combustion chamber, and exhaust power valves, which improve combustion efficiency at varying RPM. These design changes have allowed two-cycle engine manufacturers to effectively reduce emissions, improve fuel efficiency and decrease oil consumption. Today's two-cycle motors of all types require specialized oil technology to deliver maximum engine protection,
dependable operation and long service life.


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Why Motor Oil Deteriorates

It is common knowledge that, at some point, engine oil must be changed. It's something that is preached relentlessly to vehicle owners by vehicle manufacturers, quick lubes and oil companies. But consumers are widely unaware of what exactly makes oil changes necessary.

Many factors contribute to a motor oil's demise, but it is essentially the accumulation of contaminants in the oil and chemical changes in the oil itself that make a motor unfit for further service. With time, it is inevitable that the oil will be contaminated by dirt or sludge, or succumb to the extreme pressures or temperatures found inside an engine. AMSOIL Motor Oils are formulated with the industry's most advanced synthetic base stocks and additive packages to combat the forces that deteriorate conventional oils. (read more)


What is the NOACK Volatility Test?
Volatization is a term used to describe what happens to a fluid as it is heated to the point it begins to "boil off." Upon reaching a certain temperature, oil will begin to lose some of its lighter weight molecules as they "boil off" and leave heavier weight molecules behind. Not only does this cause higher oil consumption, this process can also cause increased viscosity making the oil more difficult to circulate through the lubrication system. (read more)


Quality Takes Priority at AMSOIL

The AMSOIL chemical laboratory plays an important role in the daily operations at AMSOIL headquarters. The lab fulfills tech service requests, performs competitor testing and comparisons, and works on the research and development of products at AMSOIL. One of the most important jobs at the lab is quality control. AMSOIL is known for formulating high-quality products and the AMSOIL chemists ensure that everything coming in and going out meets AMSOIL standards. How do they do it? (read more)


Premium AMSOIL 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.


"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.


THE NOACK Volatility Test
The NOACK 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 and emissions.

AMSOIL Now An ISO Certified Manufacturer
AMSOIL recently 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 industry.

ISO 9001:2000 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.

The ISO 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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