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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?

What is the Four-Ball Wear Test?

What is TBN?


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AMSOIL Synthetic ATF Excels in MERCON V Aluminum Beaker Oxidation Test

Automatic transmission technology has quickly evolved in recent years, and automakers are demanding higher quality, longer lasting transmission fluids to protect these transmissions in extreme conditions. In fact, Ford Motor Company recently retired its MERCON automatic transmission fluid specification. Its current MERCON V specification requires significantly improved anti-oxidation, antiwear and anti-shudder properties over previous specifications.

The MERCON V Aluminum Beaker Oxidation Test (ABOT) is a 300-hour oxidation test in which a gear pump circulates and shears the test lubricant in an aluminum beaker. Fluid temperature is maintained at 311 degrees F (155 degrees C), and samples are drawn and analyzed at intervals throughout the test. In addition, metal catalysts are submerged in the lubricant to evaluate its tendancy to attack metal materials commonly found inside transmissions.

To show the superior performance of AMSOIL Synthetic Automatic Transmission Fluid (ATF) in extreme operating conditions and over extended drain intervals, an independent laboratory subjected both AMSOIL Synthetic ATF and Texaco Havoline petroleum ATF, a MERCON V product, to extended ABOT testing, which includes tests for viscosity increase and total acid number (TAN). A Brookfield Viscosity Test, as stipulated by MERCON V, was also performed to determine the cold temperature performance of the lubricants.

Viscosity Increase Test

In order to pass the requirements of MERCON V, automatic transmsission fluids must not exceed a 25 percent viscosity increase following 300 hours of testing. AMSOIL Synthetic ATF easily passed the 300-hour ABOT test, exhibiting no viscosity increase. The test was allowed to continue for 1,106 hours, over three times the standard test length. Even after 1,106 hours, AMSOIL Synthetic ATF exhibited a minimal 6.45 percent viscosity increase, still easily passing MERCON V requirements for 300 hours.

Texaco Havoline ATF did not fare as well. Although it passed the 300-hour test requirements with a 10.66 percent viscosity increase, its viscosity increased significantly as the test was allowed to continue. It exceeded the 25 percent viscosity increase mark after 500 hours, then soared to a 3,539.04 percent viscosity increase after 1,012 hours.

Total Acid Number (TAN) Test

MERCON V requirements do not allow a total acid number exceeding 3.5 mg following 300 hours of testing. Measured at 0.4 mg following 300 hours of testing, AMSOIL Synthetic ATF easily passed this portion of the test. Even after 1,106 hours of extended testing, AMSOIL Synthetic ATF easily passed MERCON V requirements for 300 hours. In fact, its TAN of 2.7 mg after 1,106 hours was lower than the 3.2 mg TAN of Texaco Havoline ATF after 300 hours. Although Texaco Havoline ATF passed 300-hour test requirements, it again showed its inability to provide protection over extended intervals, climbing to a TAN of 7.50 mg after 1,012 hours of testing.

Brookfield Viscosity Test

The Brookfield Viscosity Test involves preheating the test lubricant and allowing it to stabilize at room temperature before transferring it to a glass cell with a special spindle. The glass cell is placed into a cold cabinet for 16 hours at a predetermined temperature of between 5 and -40 degrees C (41 degrees F to -40 degrees F). A viscometer rotates the spindle within the lubricant at the speed giving a maximum torque reading of the viscometer, and the reading is used to calculate the viscosity of the lubricant. The lower the cold temperature viscosity (measured in cP), the better the cold temperature protection. The MERCON V specification requires a maximum Brookfield viscosity of 13,000 cP.

The Brookfield viscosity of the automatic transmission fluids was measured before the test began and again at the conclusion of the test. The Brookfield viscosity of the AMSOIL Synthetic ATF measured 8.770 cP. at the beginning of the test, easily meeting MERCON V requirements of 13,000 cP. Following 1,106 hours of extended testing, the Brookfield viscosity of the AMSOIL Synthetic ATF was 9.570 cP, still easily passing MERCON V requirements.

Texaco Havoline, on the other hand, exhibited a Brookfield viscosity of 14,400 cP at the beginning of the test, failing to fulfill the requirements of MERCON V. Following 1,012 hours of testing, its Brookfield viscosity exceeded 1,000,000 cP.


Oxidation and shearing forces seriously affected transmission and lubricant performance and life. The ability of AMSOIL Synthetic ATF to resist oxidation and shearing forces and maintain its protective qualities throughout the extended ABOT test clearly demonstrates the superior transmission protection and performance it provides over extended drain intervals.

AMSOIL Synthetic Automatic Transmission Fluid (ATF) exceeds the performance requirements for domestic and foreign automatic transmission fluid applications, providing automatic transmissions, power steering units and hydraulic equipment with excellent lubricating protection and better performance over a wider temperature range than conventional automatic transmission fluids

  • Resists thermal and oxidative degradation
  • Ensures cool transmission operation
  • Provides outstanding low temperature protection
  • Improves fuel economy
  • Provides smooth shifting
  • Maximizes transmission performance and service life
  • Reduces maintenance costs
  • Offers extended drain intervals



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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' 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."


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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