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Untreated Fuel Leads to Poor Engine
Performance
A vehicle demonstrates its best efficiency and engine performance when it
is new. As the engine ages, its performance suffers from gasoline
fuel-generated deposits that form on the fuel injectors, intake valves and
combustion chamber. Additives are required to control deposit formation.
Today’s fuels, however, lack sufficient
treatments of either enough additives or high quality additives. Fuel
system deposits result in the following:
• Lost fuel economy
• Lost power and poor throttle response
• Failed emission tests
• Poor drivability - surging, hesitation, stalling, rough idle
• Engine knocking (pinging) and rap
• Difficult starts
Treated Fuel Delivers Maximum
Performance
AMSOIL PI is the most potent gasoline additive available today. As a
concentrated detergent, it is unsurpassed in cleaning combustion chamber
deposits, intake valve deposits and port fuel injector deposits. AMSOIL PI
helps maintain peak engine efficiency, fuel economy, power and drivability
in newer low mileage engines. In engines with accumulated deposits,
testing showed AMSOIL PI provided the following clean-up benefits after
only one tank of gasoline:
• Improves fuel mileage an average of
2.3% and up to 5.7%
• Reduced emissions
• hydrocarbons (HC) up to 15%
• carbon monoxide (CO) up to 26%
• nitrous oxides (NOx) up to 17%
• Restored power and performance
• Reduced need for costly higher octane fuel
• Reduced noise from carbon rap and pre-ignition
• Better drivability
• Smoother operation
AMSOIL PI works as an “emissions
passer.” It is ideal for use prior to emissions inspections. Unsurpassed
Deposit Clean-up Port Fuel Injector Deposits form after the engine has
been shut down and there is no gasoline flowing through the injectors.
During this “hot soak” period the injectors heat up and the gasoline
remaining in the injectors degrades and forms deposits. This can happen
very quickly with the use of poor quality gasoline and short trip driving.
Because the clearances within the injectors are extremely tight and
injectors must deliver precise amounts of “atomized” fuel, even small
amounts of deposits can cause injectors to malfunction. Fuel flow is
reduced and spray patterns are disrupted, decreasing engine efficiency,
power and fuel economy, while increasing exhaust emissions.
Intake Valve Deposits form
on the intake side or back side of the valves. As deposits increase, they
restrict airflow and alter airflow patterns in the cylinder. The deposits
disrupt the balanced air/fuel ratio by momentarily absorbing and releasing
fuel, and they can cause valve sticking by getting in the way of the valve
stem and guide. Deposits also restrict proper seating, and the valves may
be burned. Intake valve deposits cause lost engine power, increased
emissions, poor engine efficiency and potential valve failure.
Combustion Chamber Deposits
form on the top of the pistons and on the cylinder heads. They increase
compression and absorb heat during combustion to later release it during
the intake cycle. In some engines with tight squish domes, combustion
chamber deposits cause the piston to actually hit the cylinder head. This
is referred to as combustion chamber deposit interference or “carbon
rap.” Combustion chamber deposits also flake off as they get large, and
these flakes can get trapped between the valves and valve seat, resulting
in compression loss, difficult starting and rough idle.
Higher compression and stored heat cause
increased intake fresh charge temperatures and the increased likelihood of
pre-ignition “knock” or “pinging” when the fuel spontaneously
combusts prior to spark ignition. This increases emissions and may cause
engine damage. Many of today’s cars have “knock” sensors that adjust
spark timing to prevent knock.
Although audible knock is controlled, power
is lost from retarded timing. Higher octane fuels of 4-5 octane numbers
can be used to help prevent knock, an effect called “octane requirement
increase.” As a vehicle ages, more expensive higher octane fuel is
needed to keep it operating at peak performance. By cleaning combustion
chamber deposits, knock is controlled, power is restored, fuel economy
increases and higher octane fuels are less necessary for peak performance.
Maximum Fuel Economy
AMSOIL PI maximizes fuel efficiency by dissolving and removing fuel system
deposits and other contaminants for improved power and overall
performance.
Recommendations
Treat one full tank of gas every 4,000 miles or 100 hours of service. One
bottle treats 20 gallons of gas. Do not treat and run more than 40 gallons
of gas per treatment. PI helps pass emissions tests. Treat gas, run that
tank and fill up again prior to test. Safe for use with catalytic
converters, oxygen sensors, oxygenated gas and 10% ethanol blended gas.
DANGER:
Combustible. Harmful or fatal if swallowed. Harmful if inhaled. Skin and
eye irritant. Read precautions on container before use.
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