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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.
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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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