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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. Not recommended for
two cycle engines.
DANGER:
Combustible. Harmful or fatal if
swallowed. Harmful if inhaled. Skin and
eye irritant. Read precautions on
container before use. |
