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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.
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.
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.
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.
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.
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.
NOACK Volatility
Four Ball Wear
Flash/Fire Point
Pour Point
Total Base Number