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STP Ultra 5 In 1 Fuel System Cleaner and Stabilizer, Deep Cleans Fuel System and Fights Engine Friction, 12 FlOz

4.6 4.6 out of 5 stars 1,449 ratings

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Available at a lower price from other sellers that may not offer free Prime shipping.
System Cleaner (1 Pack)

Purchase options and add-ons

Brand STP
Item Form Liquid
Specific Uses For Product engines
Item Volume 12 Fluid Ounces
Unit Count 12.0 Fl Oz

About this item

  • Formulated to help save gas and lower emissions by deep cleaning the entire fuel system
  • Formulated to help restore peak performance and reduce friction by lubricating engine parts
  • Formulated to help prevent ethanol deposits and inhibit corrosion
  • Works with modern gasoline engines such as turbo, direct inject and hybrid vehicles
  • Compatible with cap-less gas systems
See more product details

Frequently bought together

$11.97 ($1.00/Fl Oz)
Get it as soon as Wednesday, Mar 13
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$6.64
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$6.74 ($0.45/Fl Oz)
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STP Ultra 5 In 1 Fuel System Cleaner and Stabilizer, Deep Cleans Fuel System and Fights Engine Friction, 12 FlOz
STP Ultra 5 In 1 Fuel System Cleaner and Stabilizer, Deep Cleans Fuel System and Fights Engine Friction, 12 FlOz
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Price$11.97-12% $16.00
Typical:$18.25
-7% $21.20
Typical:$22.69
$9.99-13% $43.40
List:$49.99
$12.25
Delivery
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Customer Ratings
Easy to use
4.5
4.6
4.8
4.6
4.7
Value for money
4.4
4.3
4.5
4.3
4.4
Mileage
4.4
4.2
4.6
4.2
4.1
Longevity
4.4
4.6
4.4
Scent
4.1
4.7
4.1
Sold By
Amazon.com
Amazon.com
Impart Auto Parts
Pinelake Industries
Amazon.com
Amazon.com
form
Liquid
Liquid
Liquid
Liquid
Liquid
weight
0.2 kilograms
1 pounds
0.9 pounds
4 ounces
75.1 ounces
0.46 pounds
volume
12 fluid ounces
20 fluid ounces
500 milliliters
12 cubic inches
12 fluid ounces
8 fluid ounces

Important information

Ingredients

Distillates (petroleum), hydrodesulfurized middle, Distillates (petroleum), hydrotreated light, Distillates (petroleum), hydrodesulfurized light catalytic cracked, Kerosene

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From the manufacturer

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Product Description

STP Ultra 5-in-1 Fuel System Cleaner and Fuel Stabilizer is scientifically engineered using advanced cleaning technology to keep all your engines running in top form. It contains 3X the amount of cleaning agents vs the leading premium gasoline to remove an average of 61%** of harmful intake valve deposits and restore an average of 95%*** of the original injector performance. This product also contains fuel stabilizer to help keep fuel fresh during storage. Compatible with gasoline engines (2&4 stroke), inclusive of boats, motorcycles, and lawnmowers. *One bottle contains 3X by weight the amount of cleaning agents compared to 20 gallons of the leading premium gasoline. **Average result of 6 modified ASTM D5500 and D6201 tests. ***Results based on ASTM D5598

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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STP Ultra 5 In 1 Fuel System Cleaner and Stabilizer, Deep Cleans Fuel System and Fights Engine Friction, 12 FlOz


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What's in the box

  • STP Auto Performance Aid
  • Looking for specific info?

    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    1,449 global ratings

    Customers say

    Customers like the quality, smoothness and value of the cleaning agent. They mention that it works very well, makes the whole engine run smoother and is good value for money. That said, opinions are mixed on gas mileage and performance.

    AI-generated from the text of customer reviews

    46 customers mention46 positive0 negative

    Customers are satisfied with the quality of the cleaning agent. They mention it works well, has no issues, and is a great product for their car. It also boosts miles per gallon and makes for ez starts.

    "...update2nd purchase. Does a great job on road trips boosting miles per gallon and keeping the engine running smooth. Will repurchase..." Read more

    "It cleans out the jet so you don't have to tear down the carb.Give it a try first." Read more

    "Does what it's supposed to. Thoroughly cleaned my fuel system and gave me an extra 5 miles per gallon!..." Read more

    "...After using this stuff within the hour, it cleaned the fuel system and ran smoothly." Read more

    23 customers mention23 positive0 negative

    Customers like the smoothness of the cleaning agent. They say that it makes the whole engine run smoother, with better throttle response. It also makes the truck run better and more responsive. It works fast and makes a noticeable improvement in drivability. Some say that the engine was more peppy and that the idle began to smooth.

    "...The engine runs great and the mpg is returned to normal after about 300 miles. This is less then two tanks of gas from about 16 back to 20 mpg...." Read more

    "...It made a noticeable improvement in it's acceleration and smoothed out the idle...." Read more

    "...After putting this in with my gas I notice a much smoother ride" Read more

    "...The engine is running quicker and smoother. So glad I found this - I recommend it." Read more

    13 customers mention13 positive0 negative

    Customers appreciate the value of the cleaning agent. They mention that it is a good value for the price.

    "...Anyway, best fix and best cost effect product." Read more

    "Good value for money not sure if it made my gas mileage any better or if it cleaned up my engine but it didn’t hurt it any." Read more

    "...It is a good price for what it does, and I can feel a difference after using it...." Read more

    "...The price is good compared with the competition. 👍..." Read more

    5 customers mention5 positive0 negative

    Customers find the cleaning agent easy to use. They mention that it's painless to use, and it helps their engine. They also say that it makes it easier to drive and that their car feels great after using it.

    "Easy to use" Read more

    "...after about 50 this treatment will have kicked in, thus making it easier to drive...." Read more

    "...It's painless to use, and probably helps your engine...." Read more

    "Arrived quickly and easy to use" Read more

    14 customers mention9 positive5 negative

    Customers are mixed about the gas mileage of the cleaning agent. Some mention that it works fine, with a small improvement in gas mileage, while others say that it did not change their gas mileage. Some say that the product clogs the fuel injectors and reduces performance and mileage.

    "...Thoroughly cleaned my fuel system and gave me an extra 5 miles per gallon! Will use again at next oil change as recommended." Read more

    "...I can say for a fact that my gas mileage did not change." Read more

    "...It's painless to use, and probably helps your engine...." Read more

    "...Very smooth acceleration that almost feels like you have more horsepower!! Does what it says it will do. I will keep adding it about every months." Read more

    6 customers mention3 positive3 negative

    Customers are mixed about the performance of the cleaning agent. Some mention that it works great w regular or premium fuel, while others say that it doesn't work and it clogged their truck. Some customers also mention that the product doesn' t work with capless 2019 F150.

    "good product,this size works with my 35 gallon fuel tank." Read more

    "...I put new gas in the truck and started it, but it ran terribly and was missing on a couple cylinders...." Read more

    "Put in my Honda CBR 250r. Worked great w regular or premium fuel. A definite difference...like a power bar for a bike!" Read more

    "This product doesn’t work and it clogged my..." Read more

    7 customers mention0 positive7 negative

    Customers are dissatisfied with the leakage of the cleaning agent. They mention that it leaks all over the place and soaked through the box.

    "...This is the second delivery where the bottle leaked during shipping (see picture). The box has gas treatment in it and the bottle is coated in it...." Read more

    "...Made a mess when it overflowed. Tossed the rest in the garbage...." Read more

    "This leaked all over the place in the package. And soaked through the box. Couldn’t send it back" Read more

    "Was leaking bad." Read more

    Leaky Bottle during Shipping
    2 Stars
    Leaky Bottle during Shipping
    I get this product via subscribe and Save. This is the second delivery where the bottle leaked during shipping (see picture). The box has gas treatment in it and the bottle is coated in it. I immediately have clean off the bottle and throw away the box because they both smell.As for the product, I think it’s working fine. Gas treatment is a long term game to keep the engine healthy.
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    Top reviews from the United States

    Reviewed in the United States on February 29, 2024
    Style: System Cleaner (1 Pack)Verified Purchase
    Reviewed in the United States on March 29, 2022
    Style: System Cleaner (1 Pack)Verified Purchase
    19 people found this helpful
    Report
    Reviewed in the United States on September 10, 2023
    Style: System Cleaner (1 Pack)Verified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on February 7, 2024
    Style: System Cleaner (1 Pack)Verified Purchase
    Reviewed in the United States on October 24, 2023
    Style: System Cleaner (1 Pack)Verified Purchase
    4 people found this helpful
    Report
    Reviewed in the United States on December 23, 2023
    Style: System Cleaner (1 Pack)Verified Purchase
    Reviewed in the United States on February 23, 2024
    Style: System Cleaner (1 Pack)Verified Purchase
    Reviewed in the United States on February 28, 2024
    Style: System Cleaner (1 Pack)Verified Purchase

    Top reviews from other countries

    James martyn.
    1.0 out of 5 stars Rip off
    Reviewed in Canada on June 20, 2023
    Style: System Cleaner (1 Pack)Verified Purchase