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AMSOIL outperforms all other Oils


They Say Nothing Outperforms Mobil 1? Wrong!
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.

NOACK Volatility test 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.


four-ball wear testThe 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 pointThe 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 SuperSynOil.


pour pointThe 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. AMSOIL 5W-30 Synthetic Motor Oil has a lower pour point than Mobil 1 SuperSyn 5W-30 Motor Oil.


total base numberTotal 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. AMSOIL 5W-30 Synthetic Motor Oil has a higher TBN than Mobil 1 SuperSyn 5W-30 Motor Oil.

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A History of Firsts

  • First to develop an API-rated 100 percent synthetic motor oil.


  • First to introduce the concept of "extended drain intervals" with a recommended 25,000-mile/1-year drain interval.


  • First U.S. company to utilize the NOACK volatility test as a standard of performance excellence.


  • First to produce synthetic motor oils for diesel engines, racing engines, turbo and marine engines.


  • First to introduce synthetic oils that legitimately contribute to improving fuel efficiency.


  • First to manufacture synthetic gear lube for automotive use.

  • First to manufacture a synthetic automatic transmission oil for automotive use.


  • First to manufacture a 100:1 pre-mix synthetic 2-cycle oil.
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