They Say Nothing Outperforms Mobil 1? Wrong!

AMSOIL, INC. set out to examine the specifics of the overly broad "Nothing Outperforms..." Mobil claim. AMSOIL 5W-30 Synthetic Motor Oil (ASL) and Mobil 1 SuperSyn 5W-30 Motor Oil were analyzed in five key bench tests measuring motor oil performance: NOACK volatility, flash/fire point, pour point, four ball wear and total base number (TBN). As shown in the charts below, AMSOIL outperformed Mobil 1 in all five areas.


Amsoil vs. Mobil 1 in NOACK Volatility (ASTM D-5800)NOACK Volatility
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, increased oil consumption and excessive wear and emissions. A maximum of 15 percent evaporation loss is allowable to meet the API SL and ILSAC GF-3 specifications. As shown in the graph, AMSOIL 5W-30 Synthetic Motor Oil lost an extremely low 4.9 percent 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 percent of its original weight.


Amsoil vs. Mobil 1 in Four Ball Wear Test Para 3 (ASTM D-4172)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. As shown in the graph, 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.



Amsoil vs. Mobil 1 in Flash/Fire Point (ASTM D-92)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. As shown in the graph, AMSOIL 5W-30 Synthetic Motor Oil has higher flash and fire points than does Mobil 1 SuperSyn 5W-30 Motor Oil.


Amsoil vs. Mobil 1 in Pour Point (ASTM D-97)Pour Point
The Pour Point Test determines the lowest temperature at which a lubricant flows. The lower a lubricant's 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 1 SuperSyn 5W-30 Motor Oil.


Amsoil vs. Mobil 1 - Total Base Number (TBN) compared

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


If you are looking to make a purchase or wanting to become a dealer, please click the icon below. Amsoil products are primarily sold through catalog ordering. It's only $30 per year to become a dealer. If you wish to order at wholesale (25% less than the prices seen in the catalog), you can become a dealer or preferred customer to get the wholesale costs. The only way to get free shipping is to own a retail establishment and place an order exceeding $8,000. Otherwise if you live within a reasonable distance from one of the 14 warehouses in North America, you can drive in person. Shipping costs are so insignificant that it's often not worth the trouble to go to any warehouse. Since Amsoil has such a large account with UPS, they get a tremendous discount on shipping and pass it down to all of the customers.

Request AMSOIL U.S. Pricing via Email. We'll send it to you immediately. Avoid retail costs! Learn how to get dealer cost on everything now!
First name:

Last name:

Your email address:



Email addresses are NEVER given or sold to 3rd parties. We hate spam. We know you do, too!

Place your order now using the easy application guide

You can place your order immediately by using the application guide. Simply put in your year, make and model of your vehicle and add items right to the shopping cart. Shipping is fast and very economical.

Interstate Battery System of Detroit very satisfied with the results of Amsoil in their fleet!

Running a 10W30 oil for 240 straight hours!

AMSOIL was the first synthetic oil before anyone else.

Mercedes-Benz and motor oil law suits

About the Interceptor 2-cycle oil

Companies wanting to buy out AMSOIL

Harley-Davidson Oil. Which is better? Get the facts.

Regarding your factory warranty going long distances between oil changes.

Crackdown of obsolete oils in California