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
P.i. 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 P.i. helps maintain peak
engine efficiency, fuel economy, power and
drivability in newer low mileage engines. In
engines with accumulated deposits, testing showed
AMSOIL P.i. 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 P.i. 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 P.i. 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. P.i. 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.
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