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Motor Oil Test and Comparison

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

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?


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Buy AMSOIL at Wholesale Prices AMSOIL Synthetic Gasonline Motor Oils AMSOIL Synthetic Diesel Motor Oils
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Which AMSOIL Products Are Recommended For Your Vehicles?

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AMSOIL Engine Flush Provides Immediate Engine Sludge and Debris Removal

AMSOIL synthetic motor oil will also clean deposits from your engine; it will just take longer.

Dan Peterson, Vice President, AMSOIL Technical Development

Matt Erickson
Technical Product Manager,
Passenger Car

People who are new to synthetic lubricants often ask what is the best way to switch from conventional to synthetic motor oil. There is still some confusion about changing to a different type of oil in vehicles, particularly older models that have accumulated many miles. A very small group of ill-informed individuals in garages, on street corners and on blogs still cling to old beliefs that synthetic motor oils will cause roller followers to "slip or skid," or that switching to synthetic motor oil will cause issues in older engines. One common myth is that synthetics will cause older engines to leak oil.

These old ideas about synthetics causing engine problems are outdated and have been replaced by facts. The use of synthetic lubricants is growing rapidly because properly formulated synthetics offer benefits well beyond what conventional and synthetic blend products can provide. Many new passenger car and light truck vehicles come factory filled with synthetic lubricants - not just high-performance sports cars. Synthetic lubricants continue to be recognized more widely as the best choice for long-term care of expensive equipment. A coworker and I were recently discussing these and other myths surrounding synthetics. He recalled switching his and his wife's vehicles over to AMSOIL synthetic motor oil. One vehicle had nearly 80,000 miles at the time, while the other had more than 115,000. For both, it was the first time running synthetics. He told me, "You know what happened? Nothing, except I noticed they both started easier in the winter - even when parked outside overnight. And now my wife isn't wasting money at the quick lubes changing oil every 3,000 miles."

In April 2013 AMSOIL published its Las Vegas Taxi Cab Field Study (G3118). This report details the results of installing Signature Series Synthetic Motor Oil and Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid into six taxis operating in the extreme desert conditions of Las Vegas. The cabs operated nearly continuously for the next year-and-a-half. After 100,000 miles a 2010 Dodge Charger was removed from service for teardown and analysis. Its engine components were examined, rated and found to be virtually sludge-free, with seals remaining in excellent condition. The test vehicle engines responded positively to and were protected by AMSOIL synthetic motor oil in the most demanding operating conditions, even while practicing extended drain intervals.

If you are looking at putting AMSOIL synthetic motor oil into a vehicle for the first time, there are a couple ways to approach the situation. You can jump right in and simply change the oil - draining the old oil, replacing the filter with an AMSOIL Ea® Oil Filter and pouring in fresh AMSOIL motor oil. Many people, like the coworker previously mentioned, do this with excellent results.

Another option is to flush your engine prior to installing AMSOIL synthetic oil. This process more immediately removes sludge and debris accumulated over time. The main difference between flushing your engine and just a normal oil change to synthetics is the rate at which the built-up debris is removed from older engines. When motorists change over to AMSOIL synthetic motor oil without flushing, accumulated debris is cleaned from the engine over subsequent oil changes. When they use a flushing procedure, the cleanup is more immediate. Adding one bottle of AMSOIL Engine and Transmission Flush right before their next oil change will ensure the engine is clean and free of any accumulated contaminants that may be present. The steps are simple: Pour one bottle of Engine Flush into the oil fill port, idle the engine for 10-15 minutes, drain the oil and change the filter, then fill back up with the appropriate AMSOIL motor oil. AMSOIL Engine and Transmission Flush has a high-detergent chemistry formulated to remove built-up sludge and other deposits. The detergents work in a similar fashion as those already present in motor oil, just at a higher concentration. Therefore, AMSOIL Engine Flush cleans naturally, just like motor oil, but it does so more rapidly. The rapid clean-up does not break off large chunks that can cause an avalanche of debris to clog passages. Instead, it cleans at the molecular level, ensuring the deposits are dissolved and properly exit the engine with the oil when it is drained. This helps the new oil get off to a "clean start" and perform to its engineered capacity. By cleaning engines of deposits, it also improves operating efficiency, helps maximize fuel economy and reduces emissions.

In the end, there is no mandatory procedure for switching to AMSOIL synthetic motor oil. It all depends on the situation, and most importantly, the preference of the customer. Whether you drain and fill or flush, drain and fill, be confident that you're putting the very best product into your engine. Published, AMSOIL Magazine 11/13.

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."


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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