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Welcome to Americas #1 Trusted Oil Website

Largest and most knowledgeable AMSOIL Group in the U.S. and Canada led by the only AMSOIL Regency Platinum 7 Star Direct Jobber in the Organization who is also a former Ford Motor Company Senior Powertrain and Chassis Engineer. We also have a General Motors Engineer in our Group and will utilize our collective expertise and experience in order to provide you with the most up to date product and technical recommendations and we will accurately answer all your detailed vehicle related questions.


Mobil 1 Extended Performance vs. AMSOIL

Independent ASTM Certified Laboratory Testing of the new Mobil 1 Extended Performance vs. AMSOIL (and nine other major brand name motor oils) has been completed. AMSOIL is the clear winner. The complete results are available in the Comparative Motor Oil Testing link below.

Mobil 1 EP Evaporates 38% Faster Than AMSOIL, Mobil 1 EP Allows 18% More Cold Start Friction and Mobil 1 EP Allows 22% MORE Wear 

In addition, on the TFOUT test, the "Thin Film Oxygen Uptake Test" (ASTM D- 4742), which provides a very good correlation to the drain interval capability of an oil, AMSOIL passed the 500 minute cut-off mark with flying colors and still going strong, while Mobil 1 Extended Performance fell short at only 469 minutes. Once again, we say that Mobil 1 is a good quality product, however it does not compare to AMSOIL and the test data clearly shows this. 

AMSOIL offers superior wear protection, easier cold starting, less high temperature evaporation and longer guaranteed drain intervals of 25,000 miles/1-year (or 35,000 miles 1-year with the AMSOIL Severe Service 0W-30). Plus at Preferred Customer pricing you can have AMSOIL shipped direct to your door for about the same pricing as you'll pay for Mobil 1 Extended Performance at the store. 

Request a Factory Direct Catalog, Product, Technical and Wholesale Pricing Packet via U.S. Priority Mail 

AMSOIL also offers 25,000 mile/1-year Absolute Efficiency Ea Oil Filters to compliment the AMSOIL 25,000 mile/1-year, or 35,000 mile1-year line of synthetic motor oils.

What about The Other Major Oil Brands Synthetics? 

Based on ASTM test data, there are no other motor oils that that provide the wear protection that AMSOIL does. Look at the ASTM test data performed by independent ASTM and ISO Certified labs and published by AMSOIL: 

50 Weight Results for ASTM D-4172 Four-Ball Wear Test using 60 kg pressure at 150 deg C, 1800 RPM for 1 hour duration are as follows: 

AMSOIL Series 2000 20W-50 Racing Oil leaves a 0.432 mm wear scar 

Castrol Syntec 20W-50 leaves a 0.724 mm wear scar

Mobil 1 Extended Performance 15W-50 leaves a 0.825 mm wear scar 

Royal Purple 20W-50 leaves a 0.852 mm wear scar. 

Shell Formula 20W-50 leaves a 1.752 mm wear scar

Quaker State peak Performance 20W-50 leaves a wear scar of 1.928 mm

AMSOIL also offers 25,000 mile/1-year Absolute Efficiency Ea Oil Filters to compliment the AMSOIL 25,000 mile/1-year, or AMSOIL SSO 35,000 mile1-year line of synthetic motor oils. The graph below shows how Mobil 1 Extended Performance 5W-30 and other brands compare to AMSOIL SSO 0W-30.



We also have the latest Comparison Test Data comparing AMSOIL 10W-30 to new Mobil 1 Extended Performance and nine other competitive motor oils.

Mobil will not recommend or guarantee 25,000 mile/1-year drain intervals like AMSOIL 5W-30, 10W-30 or 10W-40 or 35,000 mile/1-year drain intervals like AMSOIL 0W-30 Severe Service Synthetic does and that is a fact. No-where on the Mobil bottle does it state 25,000 miles/1-year or 35,000 miles/1-year. 

"Mobil 1 has run the tag line for their advertising stating "nothing outperforms Mobil 1". Mobil makes a good oil, but I'm here to tell you that it does not outperform AMSOIL Synthetic Oils. They can come out with all the catchy advertising buzz words to market their oils, but in the final analysis, buzz words don't add one thing to their product's performance. The only reason AMSOIL has continued to grow and prosper competing with large corporations like Mobil is that AMSOIL products have consistently performed better." 

The other day I was reviewing the April Action News and the new G-100 product catalog included in it. The products featured in this issue were our two new motorcycle oils. Anyone reading about these outstanding new oils couldn’t help be impressed by how they totally blew the competition away in head-to-head performance tests. Once again, AMSOIL outperforms the competition and puts test results that prove it right there for everyone to see. 

It’s also interesting that the very bike manufacturer that said not to use synthetic motor oils in their engines now sells and recommends a synthetic motor oil with their label on it. They don’t make it, but they profit from it so now it’s OK to use. That’s very similar to how the other oil companies and automakers badmouthed synthetic motor oils until they began marketing their own synthetic oils. Are their oils as good as AMSOIL? Not when you look at the tests!

AMSOIL has a long history of making lubricants that are the very best. And the way we have shown they are the best is by testing them against the competition and publishing the results in our sales literature or right on the product labels. I don’t know of any other oil company that does this like we do. But then, I don’t know of any other oil company that makes products as good as we do, so they don’t really have as much to toot their horn about as we do. 

A couple of the many tests we believe are important when comparing motor oils are the Four-Ball Wear Test and the NOACK Volatility Test. The Four-Ball measures wear protection and the NOACK measures the volatility of an oil.

Reducing engine wear is a major function of motor oil. The better the oil protects against friction and wear, the longer the engine will perform as it was designed to, delivering maximum power and economy much better and longer than an engine with excessive wear. 

Look at the Four-Ball comparison graphs in the G-100 and on many other pieces of AMSOIL literature. There are no oils that protect better than AMSOIL. None. For all the advertising glitz and eyewash these other oil companies do to sell their oils, they really have nothing to brag about. Even a big name like Mobil 1 can’t compete with AMSOIL. Our Series 2000 0W-30 beats Mobil’s 5W-30 and every other oil it was tested against by an independent lab. 

Why is the volatility of an oil so important? Because a highly volatile oil will evaporate, changing its viscosity and performance characteristics. What starts out as a 5W-30 can turn into a 10W-40 or heavier when the lighter ends of the oil cook off. This creates the potential for creating sludge in an engine and definitely increases emissions. An oil with low volatility performs better and longer than highly volatile oils, keeping an engine cleaner and operating at peak efficiency. 

When you talk to your customers and prospects, show them these comparisons. While the major oil companies use gimmicks and glitzy TV commercial, AMSOIL spends its money producing superior lubricants. They come up with special “start up” oils, or oils that have “heat activated” wear protection additives. Sounds like a deodorant commercial I saw recently.

When it comes to start up protection, no oil protects better than AMSOIL Synthetic Motor Oils. And when the operating temperatures start climbing, you want an oil with the lowest volatility, period. That will be the oil that will continue to protect when the others start cooking. 

I can’t imagine anyone who, given the facts, would choose any other motor oil than an AMSOIL Synthetic Motor Oil. Giving people the facts is your job. That’s why we develop these superior oils. That’s why we test them against all others, and that’s why we publish the results. Because we want you to have the tools to help your customers decide. 

It doesn’t do any good for us to provide all this information unless you use it to sell your products and build your business. You don’t have to exaggerate. You don’t have to embellish the facts. All the tests we publish are genuine. Like I’ve always said, “We couldn’t put it on the label if it wasn’t true!” That’s not marketing gibberish. It’s a fact.

A. J. “Al” Amatuzio President and CEO, AMSOIL INC. 

Request Factory Direct Catalog, Product, Technical and Wholesale Pricing Packet via U.S. Priority Mail 

Here's a special excerpt from A.J. Amatuzio, President of AMSOIL, as written in the monthly AMSOIL Action News magazine to all AMSOIL Dealers regarding AMSOIL and Mobil 1:

"As most of you are aware, Mobil 1 was introduced after AMSOIL had paved the way for synthetic motor oils back in the '70's. When it was introduced it cased great concern among many of our Dealers. But in my President's Message at the time, I assured everyone that having Mobil 1 on the market would only help us sell more oil. Mobil confirmed everything we had been saying about synthetic oils, and our products and claims instantly became more credible. 

Since then, we have always been compared to Mobil 1. When people think of synthetic motor oil, they think of AMSOIL and Mobil 1, not the other Johnny-come-lately that have come on the market more recently. I have always said that Mobil 1 is a good motor oil, because compared to the run-of-the-mill motor oils on the market, it is. I have also always said that AMSOIL motor oil is better, again, because it is.  

To prove that point, we ran a number of comparative tests on our 5W-30 and Mobil 1 SuperSyn 5W-30 (as well as the new Mobil Extended Performance). The test results confirm what I have been saying all along. AMSOIL makes a better motor oil.  

These test results show significant differences between the oils. Look at the results of the NOACK Volatility Test. Which synthetic oil is going to last longer in service? Look at the difference in Total Base Numbers. Again, which oil is going to provide the longest lasting protection? Look at the Four Ball Wear Test. Which oil will protect against engine wear better? In every category we tested, Amsoil proved superior. Lower pour point, higher flash and fire points, AMSOIL tested best. 

So when I hear claims that nothing outperforms Mobil 1, I have to say 'wrong!'. They may have good slogans and marketing hype, but when it comes to superior performance, I say nothing beats AMSOIL!"

Here is a description of the test parameters discussed in this document: 

NOACK Volatility: The NOACK Volatility Test determines the evaporative 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, increased oil consumption and excessive wear and emissions. A maximum of 15% evaporation loss is allowable to meet the API SL and ILSAC GF-3 specifications. AMSOIL 5W-30 Synthetic Motor Oil lost an extremely low 4.9% of its original weight during high-temperature service, maintaining its superior protective and performance qualities, while Mobil 1 SuperSyn 5W-30 Motor Oil lost 9.17% of its original weight.

Four Ball Wear: The Four Ball Wear Test determines the wear protection properties of a lubricant by measuring the wear scars produced by four metal balls in sliding contact under the test parameters. The smaller the average wear scar, the better the wear protection provided by the lubricant. AMSOIL 5W-30 Synthetic Motor Oil completed the Four Ball Wear Test producing a smaller wear scar than the Mobil 1 SuperSyn 5W-30 Motor Oil. 

Flash/Fire Point: The Flash/Fire Point Test determines the lowest temperatures at which application of a flame will cause lubricant vapors to ignite (flash point) and sustain burning for five seconds (fire point). Lubricants with higher flash and fire points exhibit more stable volatility characteristics and are safer to use and transport. AMSOIL 5W-30 Synthetic Motor Oil has higher flash and fire points than does Mobil 1 SuperSyn 5W-30 Motor Oil. 

Pour Point: The Pour Point Test determines the lowest point at which a lubricant flows. The lower a lubricants pour point, the better protection it provides in low-temperature service. As shown in the graph, AMSOIL 5W-30 Synthetic Motor Oil has a lower pour point than Mobil 1Supersyn 5W-30 Motor Oil.

Total Base Number: Total Base Number (TBN) is the measurement of a lubricants reserve alkalinity. The higher a motor oils TBN, the more effective it is in handling contaminants and reducing the corrosive effects of acids for an extended period of time. AMSOIL 5W-30 Synthetic Motor Oil has a higher TBN than Mobil 1 SuperSyn 5W-30 Motor Oil. 

AMSOIL Proves Superior

"Dave Bigda, owner of Dynamic Auto of Elk Grove Village, Illinois.
Installs Carroll Superchargers that add about 150 HP to a stock Calloway Corvette engine. Dynamic Auto installs AMSOIL 100% Synthetic 10W-30, ATF and 80W-90 Gear Lube in all of the vehicles they put the Carroll Superchargers into.  

The Carroll Supercharger typically turns a 285 HP Corvette engine that normally runs at 4200 RPM into a monster that runs at 3500 RPM and delivers 435 HP. The supercharger makes these high-performance cars 25-45 mph faster, and as Vette Magazine said, the added horsepower "makes other Corvette drivers out there wonder if their new Vettes are pulling a trailer!" 

The Carroll Supercharger adds about 6.5 pounds of boost pressure to an engine which creates much greater temperatures and slightly higher rates of oil blow-by (oil blowing by the piston). This makes the choice of a high-quality engine oil a necessity. 

Originally, Greg Carroll, the creator of the supercharger, specified Mobil 1 as the only lubricant to use in the engine. He wanted to stress the importance of using synthetic oil in this high-powered dynamo to such an extent that he installed a small metal decal on the top of the engine informing customers to use only Mobil 1. 

He hadn't heard of AMSOIL yet. After Dave, sent a sample of AMSOIL to Mr. Carroll, that decal came off. According to Dave, Carroll felt that AMSOIL was superior to Mobil 1 in protecting engines and drivetrain components. In other words, it's the best oil he's seen" 

If you would like a FREE comprehensive packet of technical, information, catalogs, specifications, retail and wholesale prices, dealer application and other crucial information regarding Amsoil Ultra Premium Synthetic Motor Oils and Filtration Products plus much, much more please e-mail us at with your mailing address and your packet will be shipped promptly. Your name and address will be held strictly confidential.

Also, please inform us of any special interests you have (diesel, motorcycle, racing, etc.) so that we can include additional material pertaining to your special interests and vehicles.