--- product_id: 47954805 title: "STP Petrol Fuel System Cleaner 400ml" price: "₨13013" currency: LKR in_stock: true reviews_count: 13 url: https://www.desertcart.lk/products/47954805-stp-petrol-fuel-system-cleaner-400ml store_origin: LK region: Sri Lanka --- # 400ml concentrated fuel system cleaner improves fuel economy & reduces emissions cleans injectors & intake valves STP Petrol Fuel System Cleaner 400ml **Price:** ₨13013 **Availability:** ✅ In Stock ## Summary > ⛽ Clean fuel, cleaner ride, smarter drive. ## Quick Answers - **What is this?** STP Petrol Fuel System Cleaner 400ml - **How much does it cost?** ₨13013 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/47954805-stp-petrol-fuel-system-cleaner-400ml) ## 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 - • **Eco-Friendly Drive:** Lowers harmful emissions and engine knocking for a cleaner ride - • **Effortless Maintenance:** Just pour before refueling—compatible with most petrol cars - • **Fuel Efficiency Booster:** Optimizes combustion to stretch every drop of petrol further - • **Complete Fuel System Detox:** Advanced formula targets injectors, valves & fuel lines for peak engine health - • **Power & Performance Revival:** Eliminates deposits that drag down acceleration and throttle response ## Overview STP Petrol Fuel System Cleaner is a 400ml concentrated additive designed to clean and condition your petrol engine’s entire fuel system. It removes harmful deposits from injectors and intake valves, restoring engine power, improving fuel economy, and reducing emissions. Easy to use and compatible with most petrol vehicles, it ensures smoother performance and a more efficient drive. ## Description Concentrated formula cleans and conditions your car's entire fuel delivery system, removing deposits to recover peak engine performance and fuel efficiency. Review: Mr Kenneth Spearing - Fantastic a1 made big difference to car performance 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. ## 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 | 83 in Automotive ( See Top 100 in Automotive ) 3 in Fuel Systems | | Brand | STP | | Customer Reviews | 4.5 4.5 out of 5 stars (795) | | 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. | | Guaranteed software updates until | unknown | | 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 - Image 1](https://m.media-amazon.com/images/I/616O3WaIc1L.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 ### ⭐⭐⭐⭐⭐ Mr Kenneth Spearing *by S***T on 20 July 2026* Fantastic a1 made big difference to car performance ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐ Decent value and seems to work fine. *by M***T on 27 July 2026* Seems to work and good value. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.lk/products/47954805-stp-petrol-fuel-system-cleaner-400ml](https://www.desertcart.lk/products/47954805-stp-petrol-fuel-system-cleaner-400ml) --- *Product available on Desertcart Sri Lanka* *Store origin: LK* *Last updated: 2026-09-26*