Features & Benefits
- Maximize horsepower
- Reduce knocks, pings and hesitation
- Clean fuel injections
- Lubricate upper cylinder
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Item #:
30703211
STP High Mileage Fuel Injector Cleaner and Carburetor Cleaner Treatment, Bottled Lubricant for Upper Cylinder, 5.25 Oz, 12 Count, STP
Item #:
30703211
XCD 210
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Order now and get it around Friday, August 28
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STP Racing Series Octane Booster is scientifically formulated using a combination of powerful ingredients to maximize performance and eliminate the pre-ignition that can occur with lower-octane gasoline.
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What Stands Out
High Mileage Formula
Specifically designed for high mileage vehicles, this cleaner effectively removes deposits and restores engine performance, ensuring a smoother ride and prolonged engine life.
Upper Cylinder Lubrication
Incorporates a lubricant that reduces friction in the upper cylinder, enhancing fuel efficiency and reducing wear, making it an essential treatment for engine care.
Convenient Packaging
Available in a 5.25 oz bottle with a 12 count pack, this product offers easy storage and application, making it ideal for regular maintenance or on-the-go use for busy vehicle owners.
Product Details
- Fights deposit buildup and engine friction
- Maintains optimal engine efficiency
- Safe for any gasoline engines
- Compatible with cap-less gas systems
- 1 bottle treats up to 21 gallons of gasoline
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Product Technical Details
| Manufacturer | STP |
| Brand | STP |
| Model | 78571-12PK |
| Item Weight | 4.44 pounds |
| Product Dimensions | 1.2 x 2.2 x 7.8 inches |
| Item model number | 18311-12PK |
| Manufacturer Part Number | 78571-12PK |
Who Should Buy?
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High Mileage Vehicles
Ideal for vehicles with over 75,000 miles, enhancing performance and fuel efficiency effectively.
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Engine Maintenance
Great for regular maintenance routines to help keep fuel injectors and carburetors clean and functioning well.
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DIY Car Owners
Suited for DIY enthusiasts seeking a cost-effective solution to improve their vehicle's fuel system.
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New Vehicles
Not necessary for newer models under 75,000 miles that already have clean fuel systems.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is STP Octane Booster, and how does it work?
Answer: STP Octane Booster is a performance-enhancing fuel additive designed to increase the octane rating of gasoline. By boosting the octane level, it helps prevent engine knock, ensuring smoother performance. This product works by reducing engine deposits and promoting better combustion. For best results, it's often used in sports or performance vehicles where high-octane fuel is beneficial. Many users report improved acceleration and overall engine efficiency after regular use. -
Question:
Can STP Octane Booster clean my fuel system?
Answer: Yes, STP Octane Booster also functions as a fuel intake system cleaner. It aids in the removal of carbon deposits and other buildup in the fuel system, improving fuel flow and efficiency. Cleaning the fuel system can lead to better engine performance, reduced emissions, and prolonged engine life. Use this product as part of your regular maintenance to keep your fuel system in top condition. -
Question:
How often should I use STP Octane Booster?
Answer: It's recommended to use STP Octane Booster every fill-up for maximum benefits, especially in high-performance or older vehicles that may be prone to knocking. The frequency can vary based on driving conditions and vehicle type, but regular use can enhance overall engine performance and keep the fuel system clean. If you frequently drive in demanding conditions, integrating it into your maintenance routine can be particularly beneficial. -
Question:
Is STP Octane Booster safe for all vehicles?
Answer: Generally, yes! STP Octane Booster is safe for use in both gasoline and diesel engines, as well as normal and turbocharged vehicles. However, it's advisable to check your vehicle's manual to ensure compatibility, especially if your engine is still under warranty. Using it in the right proportions ensures optimal engine performance while maintaining the integrity of your engine components. -
Question:
How do I use STP Octane Booster in my vehicle?
Answer: To use STP Octane Booster, simply pour one bottle (5.25 fl oz) into your gas tank before filling up with gasoline. This ensures proper mixing with the fuel. For best results, avoid using it in a nearly empty tank, as it works more effectively with a full tank to enhance the entire fuel mixture. This easy application helps you enjoy the full benefits quickly and conveniently. -
Question:
Does STP Octane Booster provide instant results?
Answer: Many users report noticeable improvements in engine performance shortly after adding STP Octane Booster, with improved acceleration and engine smoothness being common experiences. As the cleaner begins to work on the fuel system deposits, enhanced combustion efficiency can be detected within a few drives. However, for long-term benefits, regular use is essential for maintaining optimal engine performance. -
Question:
What is the correct dosage for STP Octane Booster?
Answer: Each 5.25 fl oz bottle of STP Octane Booster is designed to treat up to 15 gallons of fuel, providing sufficient enhancement for most vehicles. Using the correct dosage is crucial; overuse doesn't result in better performance and could be wasteful. For smaller fuel tanks, adjusting the amount proportionately will ensure that you still benefit from the performance boosting effects without exceeding recommended limits. -
Question:
Can I mix STP Octane Booster with other fuel additives?
Answer: It is generally advised to avoid mixing STP Octane Booster with other fuel additives unless specified by the manufacturer. Combining add-ons can sometimes lead to unforeseen interactions that might affect performance. If you want to maximize results, consult your vehicle's user manual or the product guidelines to prevent any adverse effects on your engine. -
Question:
What benefits does regular use of STP Octane Booster provide?
Answer: Regular usage of STP Octane Booster can lead to several benefits, including enhanced engine performance, smoother acceleration, and improved fuel efficiency. It also helps in cleaning the fuel system, which can prevent costly repairs in the long run. Users often find their vehicles running more efficiently during their day-to-day activities, making it a valuable addition to any regular maintenance routine. -
Question:
Where can I buy STP Octane Booster in Montserrat?
Answer: You can conveniently purchase STP Octane Booster, Fuel Intake System Cleaner at Ubuy Montserrat. Ubuy offers a reliable shopping experience with fast shipping options, making it easy to get this product delivered directly to your door. With Ubuy, you can also explore a range of other automotive products that you may need for your maintenance needs.
STP Fuel System Cleaners 18311-12PK Editorial Review
The STP Racing Series Octane Booster is a fuel additive that increases pump octane and improves engine performance while ensuring that the gas remains above the minimum octane level. The product is not designed for 2 stroke engines and should only be used for off-road or street-illegal vehicles. Users recommend using one bottle for every fill-up, and it is essential to confirm that all screw caps are well-tightened to avoid spills. Customers are generally pleased with the product's effectiveness at making the engine run smoother and reducing the jarring experienced during engine shutdown/restarts. Others noticed a serious increase in MPG during the last few tank fills. Additionally, some users report that it saves them money by allowing them to use lower grade gas and thus improve gas mileage. Although most users did not experience any adverse effects on their vehicle's fuel system or oxygen sensors, one user reported two bottles leaking and was unable to return them or receive a credit. Another said one of the bottles was completely sealed but empty inside. Overall, customers seem satisfied with the product's effectiveness, but they advise users to double-check for leaks and loose caps upon delivery.
Customer Reviews & Ratings
154 customers ratings
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5 Star
78%
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4 Star
9%
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3 Star
3%
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2 Star
1%
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1 Star
9%
Review this product
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Pros
- Increases pump octane
- Improves engine performance
- Makes the engine run smoother
- Reduces jarring during engine shutdown/restarts
- Can save money by allowing users to use lower grade gas
- Helps keep the fuel system clean
Cons
- Not designed for 2 stroke engines
Platform Trust & Buyer Confidence
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Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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23 July 2026 · via Trustpilot
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