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PRODUCT DESCRIPTION
AMSOIL High Performance Synthetic 10W-40 Motor Oil
provides superior protection and performance in the
most severe automotive driving conditions. AMSOIL
High Performance Synthetic 10W-40 Motor Oil provides
a wide range of protection in all four-cycle gasoline and
diesel engines, including pickups, RV's, cars and off highway
vehicles. It is recommended for use in vehicles
subject to stop-and-go driving, short trips, high temperatures,
frequent trailer pulling and off-road use.
Resists High Temperature Vaporization
Conventional motor oils tend to “boil off” in high temperatures,
losing up to 25 percent of their original weight.
These vaporized oils circulate poorly, reduce fuel efficiency
and contribute to excessive emissions and engine
wear. AMSOIL High Performance Synthetic 10W-40
Motor Oil resists vaporization. In fact, according to the
NOACK Volatility Test, which measures the weight loss
of an oil due to evaporation, AMSOIL High Performance
10W-40 only loses 7.0 percent of its weight in high temperature
service, surpassing rigorous European
standards set at 13 percent weight loss in high temperature
testing. The superior vaporization resistance of
AMSOIL High Performance 10W-40 keeps engine wear,
oil consumption and emissions to a minimum, while keeping
oil circulation efficient and fuel economy high.
Resists Oxidation and Thermal Breakdown
Conventional oils oxidize in high operating temperatures,
producing sludge and deposit build-up that contribute to
corrosion, increased engine wear and decreased fuel
economy. AMSOIL High Performance Synthetic 10W-40 Motor Oil resists oil breakdown, maintaining its cooling and
lubricating properties and providing extended drain
intervals. It continues to provide maximum protection at
temperatures that oxidize conventional oils.The advanced
heat transfer capabilities and high lubricity of AMSOIL High
Performance Synthetic 10W-40 Motor Oil keep engines
running in their optimum temperature range for top
performance and long life.
Provides High Shear Stability
AMSOIL High Performance Synthetic 10W-40 Motor Oil
surpasses the North American SAE and European ACEA
oil specifications for high temperature/high shear (HTHS)
viscosity. It retains its viscosity at high temperatures and
loads that cause conventional oils to shear back to a lower
viscosity. AMSOIL High Performance Synthetic 10W-40
Motor Oil maintains an extremely protective viscosity of
3.93 cP at 302°F (150°C) in the ASTM D 4683 High
Temperature/High Shear Test, significantly exceeding
test limits.
Provides Low Temperature Protection
AMSOIL High Performance Synthetic 10W-40 Motor Oil
remains fluid at temperatures as low as -54°F (-48°C),
permitting easy engine cranking for quick starts. During
sub-zero temperatures, it flows to all parts of the engine
much quicker than conventional petroleum oils, greatly
reducing the rate of wear and increasing engine life.
Resists Deposit Formation
AMSOIL High Performance Synthetic 10W-40 Motor Oil
is highly resistant to oxidation, running significantly
cleaner than conventional motor oils. AMSOIL 10W-40
has a superior detergent/dispersant additive package
that, when tested after tens of thousands of miles of
use in the crankcase, still exhibits outstanding deposit
control.
Inhibits Rust and Corrosion
AMSOIL High Performance Synthetic 10W-40 Motor Oil
contains special rust and corrosion inhibitors to protect
iron parts, as well as copper, lead and aluminum bearing
materials.
Provides Extended Drain Intervals
AMSOIL High Performance Synthetic 10W-40 Motor Oil
features a superior synthetic composition and advanced
performance additives, performing much longer than
competing conventional and synthetic oils. No other
major oil manufacturer matches AMSOIL’s 25,000-mile or
one-year drain interval recommendations.
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