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

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What is the Noack Volatility Test?

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AMSOIL Powersports Oils Provide Superior Wet-Clutch Performance

By definition. a clutch is a coupling used to connect and disconnect the driving and driven parts of a mechanism. Modern motorcycles and ATVs require the use of a clutch to connect and disconnect the engine (driving) and transmission (driven). Without the clutch, there would be no way to stop the vehicle from moving without also stopping the engine. The clutch also makes shifting easier and minimizes stress on gears and other components, extending equipment life

Why a Wet-Clutch?

The clutch is a frictional device, meaning it requires friction to complete the task of connecting the engine and transmission. Because a clutch is a frictional device, and one of the main purposes of lubrication is to reduce friction, why would anyone introduce oil to a clutch? Modern technology and superior technological know-how have afforded the ability to formulate multifaceted lubricants capable of functioning in a variety of conditions. While not all lubricants are suitable for use in wet-clutch applications, an oil-immersed clutch benefits from the lubricant’s ability to reduce operating temperatures, prevent the formulation of deposits and clean internal components. All of these benefits lead to better performance and longer life.

Clutch Slip

Clutch slip is a big concern with many powersports enthusiasts. To the operator, clutch slip feels like an elongated shift or a delay in the transfer of power from the engine to the wheels. This is due to a lack of friction generated within the clutch pack.

The clutch pack is located between the clutch’s inner hub and the clutch basket and consists of a series of two types of plates: steel and frictional. The inner-most plate is a plain steel plate (sometimes aluminum) which attaches to the inner hub via tabs on the plate’s inner diameter, and the inner hub is connected to the transmission. The next plate is a frictional plate which attaches to the clutch basket via tabs on its outer diameter, and the basket is attached to the engine. The friction plates are coated with a fibrous compound that helps them grip the steel plates when the clutch is engaged. The plates within the pack alternate until the desired pack height is reached.

A spring-loaded pressure plate atop the clutch pack applies constant force to the clutch pack. The mechanical device that engages and disengages the clutch assembly, normally a lever located on the handle bars, pulls the pressure plate back and allows the plates within the clutch pack to separate, severing the connection between the engine and transmission.

The clutch is only disengaged in order to stop the transfer of power from the engine to the wheels. When engaged, the clutch spring applies a constant load on the pressure plate, forcing the clutch pack together. The load creates a high level of static friction between the plates in the pack, causing them to rotate together. In this position, rotational movement from the engine is transferred to the clutch basket, to the frictional plates, through the steel plates, into the inner hub and finally to the transmission input shaft. The key here is the static friction that holds the frictional and steel plates together, allowing the transfer of power from the engine to the wheels. Clutch slip occurs when the static friction is overcome and the plates rotate at different speeds, or slip.

Common Causes for Clutch Slip

While it seems logical to blame the lubricant for clutch slip, there are many possible causes. Worn friction plates, glazed clutch plates, loss of clutch spring tension, improper clutch pack height, engine modifications, operator error and the use of an incorrect lubricant all are potential causes for clutch slip. If a lubricant with the correct frictional properties is used, it is the least likely cause of clutch slip.

Wet-Clutch Compatibility

Wet-clutch compatibility is determined through standards set forth by the Japanese Automotive Standards Organization (JASO) and the International Organization for Standardization (ISO). Both standards categorize oils according to their frictional properties, allowing consumers to choose the appropriate oil based on which JASO or ISO category is recommended by the equipment manufacturer. If no JASO or ISO category is listed on an oil, it is likely that compatibility in wet-clutch applications has not been reviewed. These oils should not be used in wet-clutch applications.

AMSOIL and Wet-Clutch Compatibility

The frictional characteristics of all AMSOIL powersports oils have been fully reviewed using the test methodology set forth in JASO standard T903:2006 sub-standard T904 and ISO standard 24254:2007. While clutch slippage and wet-clutch compatibility are major concerns, it is important to choose an oil that provides maximum protection and performance for other lubricated components as well. A good oil must not only offer the necessary frictional properties, but also minimize operating temperatures and reduce the formation of varnish and lacquer. A good oil must also maintain plate cleanliness, provide good anti-foaming properties and superior shear stability. These are characteristics offered by AMSOIL motor oils for powersports applications.

According to AMSOIL Technical Product Manager, PowerSports Dave Anderson, choosing and oil that provides balanced protection is paramount. “Different pieces of equipment have different appetites for fluids,” said Anderson. “In order to obtain the best performance for any piece of equipment it is important that the fluid is formulated to address the main concerns for that application. That is one of the key reasons AMSOIL provides the variety of products it does.” Anderson said testing is the key to ensuring AMSOIL products excel. “Our desire is to provide the best possible performance we can technically provide,” said Anderson. “Many AMSOIL powersports products are very application-specific because, from a technical standpoint, that’s that only way we can provide the highest level of performance possible.” For more information regarding wet-clutch performance, refer to the AMSOIL Technical Service Bulletin Wet-Clutch Operation and Lubrication Requirements. For more information regarding the performance characteristics of AMSOIL Motorcycle Oils, refer to the AMSOIL white paper A Study of Motorcycle Oils.


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AMSOIL Synthetic Diesel Oil Articles and Testimonials


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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