--- product_id: 659314820 title: "STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml, Enhances Fuel Economy | Restores Power and Protects your Engine, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK" brand: "stp" price: "R711" currency: ZAR in_stock: true reviews_count: 13 category: "Stp" url: https://www.desertcart.co.za/products/659314820-stp-ultra-5-in-1-diesel-fuel-system-cleaner-400ml store_origin: ZA region: South Africa --- # 5-in-1 fuel system cleaner reduces diesel consumption & emissions restores peak engine performance STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml, Enhances Fuel Economy | Restores Power and Protects your Engine, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK **Brand:** stp **Price:** R711 **Availability:** ✅ In Stock ## Summary > ⛽ Unlock your diesel engine’s hidden potential — drive smarter, cleaner, faster! ## Quick Answers - **What is this?** STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml, Enhances Fuel Economy | Restores Power and Protects your Engine, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK by stp - **How much does it cost?** R711 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/659314820-stp-ultra-5-in-1-diesel-fuel-system-cleaner-400ml) ## Best For - stp enthusiasts ## Why This Product - Trusted stp brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durability Defender:** Reduces friction and corrosion to extend engine life and reduce costly repairs. - • **All-in-One Power Boost:** Cleans, conditions, and protects your entire diesel fuel system in a single 400ml dose. - • **Fuel Economy Game-Changer:** Cuts diesel consumption and exhaust emissions, saving you money and the planet. - • **Engineered for Peak Performance:** Removes harmful deposits to restore throttle response and smooth acceleration. - • **Trusted by Pros, Loved by Drivers:** Top-ranked cleaner with 4.6 stars from thousands of diesel enthusiasts and mechanics. ## Overview STP Ultra 5 in 1 Diesel Fuel System Cleaner is a concentrated 400ml liquid formula designed to clean, condition, and protect diesel engines. It removes deposits, reduces friction and corrosion, improves throttle response, and enhances fuel economy while lowering emissions. Highly rated and trusted by professionals, it’s a must-have for maintaining peak diesel engine performance. ## Description Concentrated formula cleans and conditions the entire fuel delivery system, restoring peak engine performance, reducing friction, and improving fuel economy. Review: Essential for My Tuning Business – Keeps Diesel Engines Running Smooth - I’ve been using the STP Ultra 5 in 1 Diesel Fuel System Cleaner in my car tuning and workshop business for a while now, and it’s been fantastic. I use it on everything from standard diesel vehicles to high-performance tuning projects, and it consistently delivers excellent results. This cleaner tackles multiple issues at once — it cleans injectors, removes carbon deposits, prevents corrosion, and improves overall fuel efficiency. I’ve noticed smoother running engines, reduced smoke, and more responsive performance after use. It’s also incredibly easy to use and works with every diesel vehicle I’ve tested. Compared to other fuel additives I’ve tried, this one really stands out for its reliability and effectiveness. It’s a small investment that pays off in better engine performance, longevity, and fewer maintenance issues. For any professional working with diesel vehicles — whether in tuning, repairs, or general maintenance — the STP Ultra 5 in 1 Diesel Fuel System Cleaner is an absolute Review: A rapid marked difference. - Used on a 9 year old Mercedes SLC 250d 35k miles. What a marked difference after only 5 miles! Smoother acceleration, particularly noticable at setting off. Much quieter and smoother idle. Feels like a different car. Product is utterly amazing. Throttle response is definately smoother and linear. I will buy again in 4 or 5k. Thank you. ## Features - Contains amides, C18-unsatd., N-[3-(dimethylamine)propyl]. May produce an allergic reaction. - May be fatal if swallowed and enters airways. - Repeated exposure may cause skin dryness or cracking. - Toxic to aquatic life with long lasting effects. - What You'll Get - 400 ml Diesel Fuel System Cleaner - Concentrated Cleaning Power - Cleans and conditions the entire fuel delivery system in one tank - Restores Power and Performance - Recovers peak engine performance by removing harmful deposits - Protects Your Engine - Reduces friction and protects key engine parts from wear and corrosion - Reduces Diesel consumption and exhaust emissions - promotes better fuel economy ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00NC1ER3U | | Best Sellers Rank | 33 in Automotive ( See Top 100 in Automotive ) 1 in Carburettor Cleaners 2 in Fuel Systems | | Brand | STP | | Brand Name | STP | | Contains Liquid Contents? | Yes | | Country of Origin | United Kingdom | | Customer Reviews | 4.6 out of 5 stars 3,797 Reviews | | Global Trade Identification Number | 05020144800132 | | Included Components | Diesel System Cleaner | | Item Form | Liquid | | Item Type Name | Car Care Ultra Diesel System Cleaner, 5 in 1 Concentrated Cleaning Formula for Diesel Engines, 400 ml | | Item Volume | 400 Millilitres | | Item Weight | 0.88 Pounds | | Item form | Liquid | | Item volume | 400 Millilitres | | Manufacturer | STP | | Model Number | 77400EN | | Number of Items | 1 | | Part Number | GST77400EN | | Scent | Ketane | | Size | 400 ml (Pack of 1) | | Special Features | Concentrated | | Specific Uses For Product | Engine | | Specific uses for product | Engine | | Surface Recommendation | Metal | | Unit Count | 400.0 millilitre | | Unit count | 400.0 millilitre | ## Product Details - **Brand:** STP - **Item form:** Liquid - **Item volume:** 400 Millilitres - **Item weight:** 0.88 Pounds - **Number of items:** 1 - **Scent:** Ketane - **Special feature:** Concentrated - **Specific uses for product:** Engine - **Surface recommendation:** Metal - **Unit count:** 400.0 millilitre ## Images ![STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml, Enhances Fuel Economy | Restores Power and Protects your Engine, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK - Image 1](https://m.media-amazon.com/images/I/61LI+B+kwwL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Essential for My Tuning Business – Keeps Diesel Engines Running Smooth *by T***D on 7 December 2025* I’ve been using the STP Ultra 5 in 1 Diesel Fuel System Cleaner in my car tuning and workshop business for a while now, and it’s been fantastic. I use it on everything from standard diesel vehicles to high-performance tuning projects, and it consistently delivers excellent results. This cleaner tackles multiple issues at once — it cleans injectors, removes carbon deposits, prevents corrosion, and improves overall fuel efficiency. I’ve noticed smoother running engines, reduced smoke, and more responsive performance after use. It’s also incredibly easy to use and works with every diesel vehicle I’ve tested. Compared to other fuel additives I’ve tried, this one really stands out for its reliability and effectiveness. It’s a small investment that pays off in better engine performance, longevity, and fewer maintenance issues. For any professional working with diesel vehicles — whether in tuning, repairs, or general maintenance — the STP Ultra 5 in 1 Diesel Fuel System Cleaner is an absolute ### ⭐⭐⭐⭐⭐ A rapid marked difference. *by I***K on 10 June 2026* Used on a 9 year old Mercedes SLC 250d 35k miles. What a marked difference after only 5 miles! Smoother acceleration, particularly noticable at setting off. Much quieter and smoother idle. Feels like a different car. Product is utterly amazing. Throttle response is definately smoother and linear. I will buy again in 4 or 5k. Thank you. ### ⭐⭐⭐⭐ Seems to have fixed a fuel delivery issue. *by S***R on 13 March 2026* Seems to have fixed 80% of the issue. Car was kangarooing on acceleration. More intermittent now, will continue to use. ## Frequently Bought Together - STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK - STP Diesel Particulate Filter Cleaner 200 ml, Cleans and Protects Your Filter by Removing Soot in One Treatment, Restores Power and Acceleration, Mechanical Car Cleaning Products, Made in the UK - STP Diesel High Milage Injector Cleaner 200 ml, Cleans and Protects your Engine for 300 miles, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK --- ## 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.co.za/products/659314820-stp-ultra-5-in-1-diesel-fuel-system-cleaner-400ml](https://www.desertcart.co.za/products/659314820-stp-ultra-5-in-1-diesel-fuel-system-cleaner-400ml) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-23*