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What is the Noack Volatility Test?

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AMSOIL Oil Service Life Can Be Determined In Various Ways

AMSOIL Signature Series Motor Oil New 700-Hour Limit Provides Clarity for Those Operating Vehicles That Idle Excessively.

TECH TALK
Dan Peterson, Vice President, AMSOIL Technical Development

Dan Peterson
Vice President,
Technical Development

Oftentimes we talk about how long motor oil can be used - the expected service life - before it needs to be changed. Service life is most frequently described in miles and can be greatly affected by a vehicle's operating conditions, which is why AMSOIL has provided definitions for normal and severe service.

For our Signature Series products, AMSOIL defines severe service as primarily short trips (less than 10 miles [16 km]); turbo/supercharged engines; commercial or fleet vehicles; excessive idling; first-time use of AMSOIL motor oil in a vehicle with more than 100,000 miles; frequent towing, hauling, plowing, or driving in dusty conditions. Most of those conditions are straightforward. "Excessive idling," however, can be difficult to define. To add clarity, AMSOIL is now adding a 700-hour interval under both normal and severe service conditions.

Matt Erickson, our Technical Product Manager, Passenger Car, created the graph below to help illustrate the importance of the hours interval by highlighting some examples. The graph shows the hours of engine operation, or idle time, versus the miles driven for a drain interval. The colored lines represent average speeds of a vehicle in four different scenarios. The blue line represents an average speed for a New York City taxi, which according to the EPA is only 7.1 mph. Even though the taxis there don't move very fast, their engines are operating nearly continuously, which means that the oil is being stressed for a large amount of time. If you follow the blue line in the graph, you can see that after 700 hours they have only traveled 5,000 miles. And according to the updated AMSOIL recommendation, these cabs should change their oil unless oil analysis says they can go longer.

During testing, we found that taxis running in Las Vegas average a consistent 14.6 mph. Even though the vehicles are not always moving, the engines stay on just to keep the air conditioners running. Following the orange line in the graph shows that these vehicles can accumulate a little more than 10,000 miles in 700 hours. That's the same amount of time as the NYC taxi, but they can go twice as long in terms of miles. This is a clear example of how the hours interval can significantly impact the amount of miles achieved in a drain interval.

The EPA city driving cycle is used to estimate the city fuel economy numbers we are familiar with seeing advertised on vehicles. It has an average speed of 21.2 mph, and it is a good representation of short-trip or stop-and-go driving seen in cities without major congestion. Vehicles primarily used in this capacity fall into severe service, so the mileage cutoff would be at 15,000 before the next oil change, which happens to correspond nicely with the 700-hour mark. Now if speeds are slightly above 21.2 mph, but the driving conditions fall into severe service (turbocharged, dusty, towing, plowing, etc.), then the drain interval will be limited by 15,000 miles before it reaches 700 hours.

Finally, the EPA highway cycle is shown in green, averaging 48.3 mph. This is mostly highway driving, and even after 25,000 miles the engine operating time is only slightly over 500 hours. Therefore, drain intervals will be set by 25,000 miles, and the hours don't even come into play.

AMSOIL Signature Series Motor Oil represents the pinnacle of oil formulation, but all motor oils eventually break down. For many applications, especially personal-use vehicles, the average speed is high enough that the hours of engine operation are not a concern. However, for high idle-time applications, such as those common to fleets, logging the amount of time the engine operates is important. Published, AMSOIL Magazine 02/15.

AMSOIL Signature Series Oil 700-Hour Graph

AMSOIL Signature Series Motor Oil New 700-Hour Limit Provides Clarity for Those Operating Vehicles That Idle Excessively.


AMSOIL Signature Series Synthetic Motor Oil

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 service conditions).

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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.


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AMSOIL Synthetic Diesel Oil Articles and Testimonials


"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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