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Motor Oil Test and Comparison

AMSOIL vs. Mobil 1

409,000-Miles Without An Oil Change

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Motor Oil Performance Tests & Comparisons

Temperature Extremes Call For Superior Motor Oils

Why Harley-Davidson Owners Choose AMSOIL

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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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Corrosion Attacks Vehicles Inside and Out

A Lubricant's Ability to Combat Corrosion is Critical for Maximum Component Life

Dan Peterson, Vice President, AMSOIL Technical Development

Dan Peterson
Vice President,
Technical Development

Losses and replacement costs due to corrosion were an estimated $510 billion in the United States in 2010. We all worry about corrosion to some extent, but when it happens slowly, we tend to forget about its devastating effects. Visitors of Duluth and Superior can see one of the great mysteries of freshwater corrosion: the Duluth harbor, whose pylons are corroding at an incredible rate. Some have theorized that the fall of the Roman empire can also be attributed to corrosion of lead-lined vessels used to store wine. The Romans drank this wine, which resulted in insanity caused by lead poisoning.

Corrosion affects the chassis and body panels of equipment and vehicles, engines, radiators, bearing surfaces, tools, grills, mowers, door hinges, trailer hitches and so on. The type of corrosion most people are familiar with is iron corrosion, referred to as rust. For our purposes, we'll define corrosion as a chemical or electrochemical reaction between a material - iron, in this case - and its environment that causes deterioration of the iron and its properties. What causes iron to rust? Can we prevent it or slow it down, or do we just need to live with the effects of rust?

Let's review a little high school chemistry to better understand corrosion. There are four basic requirements to create a corrosion cell:

1. A surface that wants rust by giving up electrons: an anode (trailer hitch)

2. A way to transfer electrons (water, with some salt to speed it up)

3. A surface that wants to accept electrons: a cathode (a piece of the trailer hitch or vehicle)

4. A current path (trailer hitch and vehicle) to transfer electrical current back to the anode (the
rusting part of the trailer hitch)

AMSOIL Dealers and customers who are lucky enough to live on or near the ocean know best what happens to unprotected iron surfaces exposed to this salty environment. Rust forms quickly and the metal surfaces soon become compromised and unsafe. Those who live in the desert (away from salt flats) experience the effects of iron corrosion much less, while others who live in the Midwest see the effects of salt that is spread on roads in the winter.

In those three examples, the common environmental factors that have the most effect on rust formation are excess water and salt. Salt (sodium chloride) accelerates corrosion by increasing conductivity. Water is important because it is the medium for transfer of electrons and dissolving salt, and it has corrosive properties also.

So how do you prevent rust or slow down the process? We could use another metal that does not react under the conditions, such as gold, but it is not economically feasible. So we are stuck with steel for building trailer hitches, and we protect the surface by creating a barrier to rust with paint, zinc coatings and by using chemicals to deactivate the surface.

AMSOIL Metal Protector creates a film on metal surfaces to protect against corrosion. Without this protection, exposed metal surfaces will corrode, pit and fail much more quickly than they would if left unprotected. But corrosion doesn't just happen at the surface of your trailer hitch; it is also going on right now inside your car engine, radiator and power-steering pump. All these components are manufactured with various metals which are susceptible to corrosion under the right conditions. What would happen if your motor oil failed to protect the inside of your engine from corrosive acids produced by burning gasoline? And look at what happens if you run straight water in your cooling system without any coolant-system protection. Corrosion starts at the surface and spreads quickly.

Many times, the effects of corrosion are confused with the effects of wear in mechanical parts, like with surface pitting. You can't do anything about the metal used in these systems, but you can do something about how well the critical surfaces are protected. We all need to be concerned about the effects of normal wear, but we also need to prevent or reduce the effects of corrosion and corrosive wear. Since both corrosion and wear are surface-oriented processes, the chemistry requires a careful balance of wear protection and corrosion protection. This is admittedly a difficult task.

AMSOIL includes complex chemistry in motor oils, antifreeze and even power-steering fluid that works at the surface in these systems to significantly reduce the rate of corrosion and keep vehicles operating for as long as possible. When it comes to balancing corrosion and wear protection, don't try this at home; trust the experts. Published, AMSOIL Magazine 07/14.

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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