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P.i. Performance Improver Gasoline AdditiveHelp

P.i. Performance Improver Gasoline Additive Product Image
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$12.80 Retail Price (USD)
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Product Code: APICN-EA
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P.i. improves fuel mileage an average of 2.3% and up to 5.7%. Reduces emissions such as hydrocarbons (HC) up to 15%, carbon monoxide (CO) up to 26% and nitrous oxides (NOx) up to 17%. Restores power and performance. Reduces the need for costly higher octane fuel. (API)

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.

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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.

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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.

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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.

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Recommendations
Treat one full tank of gas up to 20 gallons with one bottle of P.i. For very large gas tanks, partially fill to 40 gallons and treat with two bottles of P.i. Using more than two bottles per treatment is not recommended. Treat gas every 4,000 miles of service (or 100 hours for marine, stationary and off-road gasoline-powered engines). P.i. helps pass emission tests by running one tank of treated fuel through the engine prior to testing. Safe for use with catalytic converters, oxygen sensors, oxygenated gas and 10 percent 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.

API Package Sizes
Code Package Size Unit of Measure Product
APICN (APICN-EA) 12-Oz. Each PI Performance Improver Concentrate
APICN (APICN-CA) 12-Oz. Case of 12 PI Performance Improver Concentrate
More about AMSOIL Reviews

REVIEW SNAPSHOT®

by PowerReviews
AMSOILP.i. Performance Improver Gasoline Additive
 
4.8

(based on 25 reviews)

Ratings Distribution

  • 5 Stars

     

    (22)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

Most Liked Positive Review

 

Good Product for Fuel Mileage and Cleaning the System...

I use this about once a year...usually during the colder months to improve mileage and performance. It seems to help with mileage, though not sure about performance, as it appears negligible. ...Read complete review

I use this about once a year...usually during the colder months to improve mileage and performance. It seems to help with mileage, though not sure about performance, as it appears negligible. Overall, this is a useful product. My hope is that it cleans out some of that terrible ethanol garbage we get at the pumps these days.

VS

Most Liked Negative Review

 

P.I. Great, Amsoil Inc. Not Great

Amsoil products are great.

Amsoil as a company, poor. Always charging more than the total paid after the items ship, shipping cost through the roof, taxing shipping...Read complete review

Amsoil products are great.

Amsoil as a company, poor. Always charging more than the total paid after the items ship, shipping cost through the roof, taxing shipping...

Free gifts now!! Yeah, never saw one of those...

Reviewed by 25 customers

Displaying reviews 1-10

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5.0

I have ordered more for use on other units

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I used on a 2008 Mercedes Benz c300 and got great results.

 
5.0

Great product!

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

smoothed out my idle and the car has a bit more zip now!

 
5.0

I buy this all the time.

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

It actually works amsoil is a excellent product I use amsoil in every car I own. From this to there oils.

 
5.0

A Must A Each Oil Change.

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

This stuff is a must a every oil change.

 
4.0

Good stuff

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I will be running this in all of my autos twice a year fall and spring.

 
5.0

Great product

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

This is the best fuel treatment hands down

 
5.0

As important as oil change.

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

Each two months I invest to keep up clean the combustion chamber. It's a no brainer.

 
5.0

I won't use anything else.

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

For years I used chevron techron fuel system cleaner. This product is only a couple dollars more, and does a much better job.

 
5.0

Best fuel system cleaner on the market hands down

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

My friends & I use this product every 5000 miles & we love it !

 
5.0

I would buy this product again

By 

from undisclosed

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I dont use it all the time but every time that I have my freeway MPG jumps from about 27 to about 30
1999 C5 Corvette.

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