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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
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 51 reviews)

Ratings Distribution

  • 5 Stars

     

    (46)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

95%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

I make it a part of my maintenance schedule

A few vehicles ago I noticed that my truck was running sluggish, so i purchased this product. The next oil change I added it and it did everything I had hoped for. Truck...Read complete review

A few vehicles ago I noticed that my truck was running sluggish, so i purchased this product. The next oil change I added it and it did everything I had hoped for. Truck ran better, received better gas mileage, and saved me a trip to the dealer.
I recommend the P.i. improver, and use it on a regular basis.

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 51 customers

Displaying reviews 1-10

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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
 
5.0

Great products

By 

from Chino, CA

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

Putting this in my tank every 4k keeps my 2007 F150 running in top form.

  • How would you describe yourself?:
  • I'm a professional mechanic
  • What kind of vehicle/equipment do you have?:
  • 2007 Ford F150 King Ranch
 
5.0

Smooth running.

By 

from Athens, AL

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I added it to the recommended amount of gas.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 07 Titan and 46 Chevy truck
 
5.0

Used regularly

By 

from North Georgia

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

No issue noted and no loss of mileage. I attribute that to regular use of PI. Strongly recommend

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

Been using since vehicle was new

By 

from Yuma Az

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

2007 Envoy with 5.3 V8. Changed spark plugs at 110,000 mi. Looked excellent! No injector issues or fuel pump problems. Get 18 mpg regularly. All lubricants in this vehicle are Amsoil.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 2011 Ford F 250. 07 Envoy. 69 SS 427.
 
5.0

P.I.

By 

from Lock Haven, PA

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

Actually gained 1MPG.

  • How would you describe yourself?:
  • I'm a professional mechanic
 
5.0

Awesome

By 

from San Diego

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

This product is amazing. I have been using it for three years now, and the results are the exactly what is promised. I used a bottle every 3000 miles in all three of my cars.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Cars
 
5.0

Pi is the best!

By 

from Surf City, NC

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

I have a Land Rover and an Acura RDX. Both say use only premium gas. By using API every 5K or so I had absolutely no problems. Highly recommend it!

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 2017 Acura RDX and Land Rover LR2

(1 of 1 customers found this review helpful)

 
5.0

Awesome

By 

from Fairfield, ca

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

Noticed a change in my gas mileage right away!!!

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

(1 of 1 customers found this review helpful)

 
5.0

Great product

By 

from jonestown,pa

Verified Buyer

Comments about P.i. Performance Improver Gasoline Additive:

Every time I use this, my vehicles run better and mpg goes up as well. Recommend highly

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 3 pickups, 1 suv, 3 motorcycles

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