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They Say Nothing Outperforms Mobil
1? Wrong!
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| 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. |
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 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.
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 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.
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 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.
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 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.
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 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.
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