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Motor
Oil Test & Comparison - The Most Comprehensive Test Results
Ever Published by AMSOIL
What is the NOACK Volatility
Test?
Volatization is a term used to describe
what happens to a fluid as it is heated to the point it begins
to "boil off." Upon reaching a certain temperature,
oil will begin to lose some of its lighter weight molecules
as they "boil off" and leave heavier weight molecules
behind. Not only does this cause higher oil consumption, this
process can also cause increased viscosity making the oil
more difficult to circulate through the lubrication system.
 The
ASTM D-5800 (Noack) is a widely accepted method of measuring
volatility. Originally developed and used in Europe, the Noack
test determines how much weight loss an oil experiences through
volatization. AMSOIL INC. was the first in the United States
to use and report Noack results in 1984.
In the Noack test the oil is
heated to 150° C for a specified period. The lighter oil
fractions will "boil-off," leading eventually to
oil consumption, oil thickening and a loss of performance.
The test reports results in the percentage, by weight, lost
due to "boil-off."
For example, before July 1,
2001, 5W-30 motor oil in the United States could lose up to
22 percent of its weight and still be regarded as "passable."
Now, with GF-3, the maximum Noack volatility for API licensing
is 15 percent. European standards limit high quality oils
to a maximum of 13 percent loss. AMSOIL
5W-30 Synthetic Motor Oil loses only 4.9 percent of its
weight, reducing oil consumption, oil thickening and retaining
performance.
NOACK Volatility (ASTM D-5800)
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
and increased oil consumption, wear and emissions. A maximum
of 15 percent evaporation loss is allowable to meet API SL
and ILSAC GF-3 specifications. As shown in the graph, AMSOIL
10W-30 Synthetic Motor Oil outperformed its nearest competitor
by over 30 percent.
The extremely low volatility
of AMSOIL
Synthetic 10W-30 Motor Oil allows it to maintain its superior
protective and performance qualities throughout extended drain
intervals, even when faced with severe operating temperatures.
In addition, oil consumption and emissions are minimized and
fuel efficiency is maximized.
AMSOIL Synthetic 10W-30
Motor Oil provides unsurpassed protection against engine wear.
Equipment life is extended, and repairs, downtime and expenses
are reduced.
AMSOIL INC.has been the leader
in synthetic motor oil formulation since its introduction
of the world's first API rated synthetic motor oil in 1972.
By specializing exclusively in the synthetic lubricant technology,
AMSOIL is able to optimize the most advanced chemistries available.
The "Genuine Synthetic PAO Formulated" designation
displayed on AMSOIL packaging indicates that the oils are
formulated with Polyalphaolefin (PAO) synthetic base stocks.
This chemistry is the industry's premier base stock technology.
Unlike conventional mineral-based chemistries, AMSOIL PAO
base stocks contain fully saturated, hydrogenated molecules
and are free of wax and other impurities. Combined with an
exact balance of premium additives, itdelivers superior hot
and cold temperature performance, resists oxidation and acid
formation and provides long-term wear protection.
AMSOIL "General
Synthetic PAO Formulated" oils have shattered the parameters
of the most rigorous industry testing and set the standard
for all other motor oils.
Which
AMSOIL Products Are Recommended For Your Car or Truck?
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AMSOIL Inc., AMSOIL Bldg, Superior,
WI 54880.
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