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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. | 
AMSOIL Diesel Cold Flow Improver (DFF)
