---
product_id: 47954805
title: "STP Petrol Fuel System Cleaner 400ml, Fuel Injector Cleaner Additive for Petrol Cars, Engine Performance & Reduces Emissions, Suitable For Hybrids"
price: "1369145₫"
currency: VND
in_stock: true
reviews_count: 13
url: https://www.desertcart.vn/products/47954805-stp-petrol-fuel-system-cleaner-400ml-fuel-injector-cleaner-additive
store_origin: VN
region: Vietnam
---

# 400ml concentrated formula boosts engine power & efficiency cleans entire fuel system STP Petrol Fuel System Cleaner 400ml, Fuel Injector Cleaner Additive for Petrol Cars, Engine Performance & Reduces Emissions, Suitable For Hybrids

**Price:** 1369145₫
**Availability:** ✅ In Stock

## Summary

> ⛽ Unlock your engine’s hidden potential—because your car deserves the best!

## Quick Answers

- **What is this?** STP Petrol Fuel System Cleaner 400ml, Fuel Injector Cleaner Additive for Petrol Cars, Engine Performance & Reduces Emissions, Suitable For Hybrids
- **How much does it cost?** 1369145₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/47954805-stp-petrol-fuel-system-cleaner-400ml-fuel-injector-cleaner-additive)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Term Engine Health:** Regular use keeps injectors clean, ensuring smooth starts and a rough-ride-free ride.
- • **Fuel Efficiency Maximized:** Optimizes fuel delivery for longer drives and fewer stops at the pump.
- • **Simple, No-Fuss Application:** Just add to a full tank and let it work its magic—no mechanic needed.
- • **Peak Engine Performance Restored:** Removes stubborn deposits to unleash your car’s true power.
- • **Trusted by Drivers for Over a Decade:** Proven reliability with a 4.6-star rating and loyal users worldwide.

## Overview

STP’s Complete Fuel System Cleaner is a 400ml concentrated liquid designed to clean and condition your vehicle’s entire fuel delivery system. Trusted for over 10 years, it removes deposits that cause rough idling and misfires, restoring engine power and improving fuel efficiency. Easy to use by adding directly to a full tank, it supports long-term engine health and consistently helps vehicles pass emissions tests.

## Description

From the manufacturer STP = Scientifically Treated Petroleum Build up - Intake Valves Deposits on the intake valves can restrict or change the flow of air/fuel mixture into the combustion chamber When you shut off the engine, fuel that remains on the intake valves can polymerize into a hard carbon deposit or form a sticky gum Oil leaks past the valves seals and can contribute to deposits on the back of the intake valves Exhaust gas recirculation, which is a mechanism used in engines to reduce emissions, can cause soot and other combustion by-products to deposit onto the valves Fuel Additives For over 60 years, and for more miles than anyone can count, STP has been one of the most trusted names in automotive care. Car enthusiasts, “Do-it-Yourselfers” and professional racers rely on STP oil additives, fuel additives and brake and power steering fluids to keep their vehicles running better longer Due to 'Long Life' servicing intervals being stretched further, many vehicles face a build up of deposits that could have major implications on engine performance So why Use a Fuel additive? Additives are a relevant part of engine maintenance regime Car manufacturers recognise that “Clean engines = Better performance” Additives help keep vehicles running well, extends reliability, less likely to break down Build up of carbon deposits can occur within 4,000 miles, no matter how new or old the car is Build up - Injector Cleaners Clean fuel injectors are critical to vehicle performance Deposits can affect spray pattern and flow rate The spray pattern of fuel affects air/fuel mixing Fuel may be in droplets that don’t evaporate Fuel may stick to the intake port and not be drawn into the combustion chamber Clogging affects amount of fuel delivered, which results in inaccurate air/fuel blend

Review: Great product, does exactly as it says! - I've used STP products for a long time, especially the Complete Fuel System Cleaner, which I've been using for over 10 years now. I use it on my wife's car, a couple of weeks before the MOT, to ensure the engine is running smoothly and emissions are low. Its never failed an MOT on emissions ever, in the 10 years I have been using it. Very simple to use-just add it to a full tank of petrol (there is a diesel version-so make sure you buy the correct one) via the petrol tank. Easiest way is once you have taken the lid off and removed the foil cover, is to place a funnel into the petrol slot, which keeps the metal flap (which opens when you push fuel nozzle in and springs close when nozzle is removed) open, or carefully keep bottle upright until you are ready to pour in, then quickly push the narrow top of the bottle into the petrol flap, pushing the flap down as you go, this ensures all the cleaner enters the tank. If you pour slowly, you will have to wait for small amounts of the liquid to go into the tank, via the closed flap, which takes an age to do. Don't fill up the tank with petrol again, until you get onto your 'red' warning or 'low fuel' warning light/indicator comes on, this is to ensure you dont dilute the cleaner with extra petrol and give it enough time to work its way through the engine. You should notice after a few drives (once fuel has had a chance to be cleaned) that you get a bit of 'extra power' when you put the accelerator down. This does depend on how clogged your injectors were in the first place.
Review: Works - Not used my car much at all during the pandemic and when starting to use it again I had rough idle, rough ride, problems starting the car and the odd misfire. I suspected dirty injector’s so put a bottle of fuel line cleaner in and also the bottle of injector cleaner and filled my fuel tank with good fuel. After a quarter of a tank, all problems where solved. Car runs smoothly, I’ve got more power and it starts everytime. I’ve filled my tank a few times since using this and the car is still working without any issues. I’ve bought some more to use again in 6 months and will continue to use for the lifetime of the car to keep it running nice. I’ll only use premium fuel from now on as well, no more rubbish from the supermarket.

## Features

- Causes severe skin burns and eye damage.
- Harmful to aquatic life with long lasting effects.
- May be fatal if swallowed and enters airways.
- May cause an allergic skin reaction.
- Repeated exposure may cause skin dryness or cracking.
- COMPLETE FUEL SYSTEM CLEANER: Advanced petrol fuel additive designed to clean injectors, intake valves and the entire fuel system for smoother engine performance and improved responsiveness
- HELPS RESTORE ENGINE PERFORMANCE: Removes harmful deposits and build-up that can reduce power, acceleration and fuel efficiency in petrol engines
- IMPROVES FUEL ECONOMY: Regular use helps optimise fuel combustion, improve MPG and maintain efficient engine operation for everyday driving
- REDUCES EMISSIONS & ENGINE KNOCK: Helps lower exhaust emissions while reducing hesitation, rough idling and knocking caused by dirty fuel injectors
- EASY TO USE PETROL ADDITIVE: Simply pour the 400ml bottle into your fuel tank before refuelling; suitable for most petrol cars and compatible with regular unleaded fuel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BPUYPB4 |
| Best Sellers Rank | 164 in Automotive ( See Top 100 in Automotive ) 10 in Fuel Systems |
| Brand | STP |
| Customer Reviews | 4.6 4.6 out of 5 stars (768) |
| Date First Available | 6 Feb. 2013 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Item Weight | 400 g |
| Item model number | ST50400EN |
| Manufacturer | STP |
| Manufacturer part number | ST50400EN |
| Model | ST50400EN |
| Product Dimensions | 35.35 x 16.73 x 7.13 cm; 400 g |
| Special Features | Concentrated |

## Product Details

- **Brand:** STP
- **Item form:** Liquid
- **Item volume:** 400 Millilitres
- **Item weight:** 400 Grams
- **Material feature:** Non-Toxic
- **Number of items:** 1
- **Scent:** Unscented
- **Special feature:** Concentrated
- **Specific uses for product:** Engine
- **Unit count:** 400.0 millilitre

## Images

![STP Petrol Fuel System Cleaner 400ml, Fuel Injector Cleaner Additive for Petrol Cars, Engine Performance & Reduces Emissions, Suitable For Hybrids - Image 1](https://m.media-amazon.com/images/I/616O3WaIc1L.jpg)
![STP Petrol Fuel System Cleaner 400ml, Fuel Injector Cleaner Additive for Petrol Cars, Engine Performance & Reduces Emissions, Suitable For Hybrids - Image 2](https://m.media-amazon.com/images/I/71JuOOi3oTL.jpg)
![STP Petrol Fuel System Cleaner 400ml, Fuel Injector Cleaner Additive for Petrol Cars, Engine Performance & Reduces Emissions, Suitable For Hybrids - Image 3](https://m.media-amazon.com/images/I/71lSgYn2vSL.jpg)
![STP Petrol Fuel System Cleaner 400ml, Fuel Injector Cleaner Additive for Petrol Cars, Engine Performance & Reduces Emissions, Suitable For Hybrids - Image 4](https://m.media-amazon.com/images/I/71VzBwFJJsL.jpg)
![STP Petrol Fuel System Cleaner 400ml, Fuel Injector Cleaner Additive for Petrol Cars, Engine Performance & Reduces Emissions, Suitable For Hybrids - Image 5](https://m.media-amazon.com/images/I/81uSXvpWwnL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Hi, I know this has been asked already but is this safe to use on a motorbike?**
A: Hi yes. I use it on my old Norton. Works wonders but don't use the whole bottle

**Q: Will this restore old petroleum in my boat fuel tank**
A: Don't know about boat, but my husband said it was great in the car. Hope this helps a bit

**Q: Can I use both the 5 in 1 cleaner and injection cleaner in one full tank?**
A: You could but I wouldn't.  Both products have properties that help clean various parts from the Fuel Tank to the Combustion chamber. In fact the description of both products show 1-2 identical properties. Just use one and then the other after doing a the guide line of 3-4 thousand miles.

**Q: Can this go in a 4 stroke petrol moped?**
A: Yes no problem

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product, does exactly as it says!
*by C***T on 11 April 2020*

I've used STP products for a long time, especially the Complete Fuel System Cleaner, which I've been using for over 10 years now. I use it on my wife's car, a couple of weeks before the MOT, to ensure the engine is running smoothly and emissions are low. Its never failed an MOT on emissions ever, in the 10 years I have been using it. Very simple to use-just add it to a full tank of petrol (there is a diesel version-so make sure you buy the correct one) via the petrol tank. Easiest way is once you have taken the lid off and removed the foil cover, is to place a funnel into the petrol slot, which keeps the metal flap (which opens when you push fuel nozzle in and springs close when nozzle is removed) open, or carefully keep bottle upright until you are ready to pour in, then quickly push the narrow top of the bottle into the petrol flap, pushing the flap down as you go, this ensures all the cleaner enters the tank. If you pour slowly, you will have to wait for small amounts of the liquid to go into the tank, via the closed flap, which takes an age to do. Don't fill up the tank with petrol again, until you get onto your 'red' warning or 'low fuel' warning light/indicator comes on, this is to ensure you dont dilute the cleaner with extra petrol and give it enough time to work its way through the engine. You should notice after a few drives (once fuel has had a chance to be cleaned) that you get a bit of 'extra power' when you put the accelerator down. This does depend on how clogged your injectors were in the first place.

### ⭐⭐⭐⭐⭐ Works
*by M***. on 6 February 2022*

Not used my car much at all during the pandemic and when starting to use it again I had rough idle, rough ride, problems starting the car and the odd misfire. I suspected dirty injector’s so put a bottle of fuel line cleaner in and also the bottle of injector cleaner and filled my fuel tank with good fuel. After a quarter of a tank, all problems where solved. Car runs smoothly, I’ve got more power and it starts everytime. I’ve filled my tank a few times since using this and the car is still working without any issues. I’ve bought some more to use again in 6 months and will continue to use for the lifetime of the car to keep it running nice. I’ll only use premium fuel from now on as well, no more rubbish from the supermarket.

### ⭐⭐⭐⭐ Preventative measure to reduce build-up of deposits or 'snake oil'?
*by P***T on 16 February 2018*

Updated review. In summary it helped low-end performance but did not improve fuel economy for same *driving style*. Do these cleaners work? This is an emotive subject but unfortunately like most people I am not trained in stripping down and rebuilding the engine in my car! So let's look at this idea about deposits another way - burning hydrocarbons makes deposits, so would you not get your home gas boiler cleaned and serviced to keep it working efficiently? I have a 2009 Kia Rio 1.4L petrol on 60k miles, the engine is a simple DOHC 16v unit with a cast iron block. I chose this product because the datasheet indicated that it is x5 more 'concentrated' than the equivalent Redex, so this was essentially the same cost versus 'cleaning power'. During the past two years I have occasionally used Redex and I am certain it has improved the engine's response and the fuel consumption, but exactly how much I don't know. The only issue I have had with this product is with dosage, the bottle label contradicts the products US website, so I used 50% bottle in 9 gallon (imp) tank. After one tankful I would say it has helped low-end performance (up to 3k rpm) but did not improve fuel economy for same *driving style*, I think the economy gain is cancelled because you inadvertently continue to use more throttle for the same rate and so use more fuel, so maybe I'll try to accelerate with less throttle and see if I get an improvement. I think next time I will try either Techron or Seafoam. At the end of the day I see this as a one-off preventative measure on a car that I put £150pcm worth of petrol into, it may be that my 10-mile commute and occasional 'Italian tune-up' are ideal in reducing the build-up of deposits.

## Frequently Bought Together

- STP GST50400EN ST50400EN Complete Petrol Fuel System Cleanner, 400 ml
- STP Petrol Injector Cleaner 200 ml, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Mechanical Car Cleaning Products, Made in the UK
- Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Petrol Engines, Suitable For Hybrids

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-06-03*