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P.i. Performance Improver Gasoline AdditiveHelp

P.i. Performance Improver Gasoline Additive Product Image
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$13.45 Retail Price (USD)
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Product Code: APICN-EA
Product Highlights View Full Description

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 60 reviews)

Ratings Distribution

  • 5 Stars

     

    (53)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

97%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

PI Fuel Maintenance

I have used this product in all my vehicles a few times a year at fuel fill-ups. I use top tier gasolines, but short drive habits and traffic congestion are problematic to deposit...Read complete review

I have used this product in all my vehicles a few times a year at fuel fill-ups. I use top tier gasolines, but short drive habits and traffic congestion are problematic to deposit buildup. I product focuses on fuel system performance unlike so many that say you can put the same product in your gas tank and in your engine oil. That just sounds like bad plan.

VS

Most Liked Negative Review

 

Not convinced it did anything

Put it in gas as per directions, drove it around in my 2012 work van, 140,000km. Normal average consumption is 11.8 to 12.4L/100km, and I fell in that range for the treatment...Read complete review

Put it in gas as per directions, drove it around in my 2012 work van, 140,000km. Normal average consumption is 11.8 to 12.4L/100km, and I fell in that range for the treatment tank, and the following tank. Can't say if it cleaned anything out, but I can say it didn't help mileage.

Reviewed by 60 customers

Displaying reviews 1-10

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5.0

I will continue to use this product each year.I

By 

from Seattle, Washington

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I add this product when I fill up my gas tank once or twice a month. It negates the negative effects of the water in the gas, makes my vehicles run better and cleans.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Two bmw convertibles, a 4-runner and a
 
5.0

Works as advertised!

By 

from Winchester Va

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

Every time I use this additive my mpg always increase by 1 to1.5 ! I'm surprised at how even top tier gasoline can use extra cleaning for a better burn.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Cars and motorcycles
 
5.0

can tell a difference

By 

from Saint Louis, Mo

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

Used Amsoil PI in a number of cars and every time I use I get better gas mileage and better throttle response.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Mazda 3s, Chevy Cruze 1LT, Toyota Rav4

(1 of 1 customers found this review helpful)

 
5.0

PI Fuel Maintenance

By 

from Everett, WA

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I have used this product in all my vehicles a few times a year at fuel fill-ups. I use top tier gasolines, but short drive habits and traffic congestion are problematic to deposit buildup. I product focuses on fuel system performance unlike so many that say you can put the same product in your gas tank and in your engine oil. That just sounds like bad plan.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • Multiple personal vehicles.
 
5.0

This improved my mpg

By 

from Bowling green, Ohio

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I have a 2005 Chevy 3500 with a 6.0 L it was getting 6 mpg . Cleaned air filter and put this in tank it went to 12.6 mpg and on next fill up , I got 9.6 mpg (I did pull my trailer ) that week but will try the pi fuel additive again

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 1 ton trucks , 5 ton trucks . Equipment
 
4.0

Good Product I Will Use Again

By 

from N,B, Canada

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I use this product in all of my vehicle

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Muscle car, 1/2 Ton Truck, SUV,

(0 of 1 customers found this review helpful)

 
4.0

Better than sea foam and cheaper

By 

from Wilmington, NC

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I used to use Sea foam, but this product is better and it is less expensive.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Cars and boats
 
5.0

Great product!

By 

from Florida

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

Pour in tank like it says! You'll get improved performance, vehicle runs smooth & great acceleration!

  • How would you describe yourself?:
  • I use AMSOIL products for my business
  • What kind of vehicle/equipment do you have?:
  • Tundra, MX bike
 
5.0

Does a great job cleaning my injectors.

By 

from San Antonio, TX

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I have added a pint of this every 3 months for the past several years and my injectors have stayed clean. I have over 125,000 on my Camry and the mileage is the same as when I first got the car..

  • How would you describe yourself?:
  • I'm a DIY handyman

(0 of 1 customers found this review helpful)

 
5.0

Keep a supply on hand to use in my vehicles

By 

from Delta, Ohio

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

seems to help quite a bit when I use it

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • variety

Displaying reviews 1-10

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