--- product_id: 604841028 title: "60103 SI-1 Complete Fuel System Cleaner - 15 Ounce (4 Pack)" brand: "red line" price: "€ 238.48" currency: EUR in_stock: true reviews_count: 5 category: "Red Line" url: https://www.desertcart.hr/products/604841028-60103-si-1-complete-fuel-system-cleaner-15-ounce-4 store_origin: HR region: Croatia --- # 30% PEA concentration for max cleaning Cleans injectors, valves & combustion chambers 15 oz concentrated formula per bottle 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce (4 Pack) **Brand:** red line **Price:** € 238.48 **Availability:** ✅ In Stock ## Summary > ⛽ Revive your engine’s soul — clean smarter, drive stronger! ## Quick Answers - **What is this?** 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce (4 Pack) by red line - **How much does it cost?** € 238.48 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/604841028-60103-si-1-complete-fuel-system-cleaner-15-ounce-4) ## Best For - red line enthusiasts ## Why This Product - Trusted red line brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **One-Tank Wonder:** Just one 15 oz bottle per tank delivers nearly 100% cleaning efficiency. - • **Powerhouse PEA Blend:** 30% Polyether Amine concentration crushes carbon buildup like no other. - • **Complete System Detox:** Targets injectors, carburetors, valves, and combustion chambers for a full-spectrum clean. - • **Pro-Grade Performance:** Trusted by top mechanics and ranked #13 in automotive fuel system cleaners. - • **Fuel Efficiency Booster:** Enhances gasoline stability while reducing gum and varnish for smoother rides. ## Overview Red Line 60103 SI-1 is a professional-grade, concentrated fuel system cleaner featuring a powerful 30% Polyether Amine formula. Designed to clean and protect injectors, carburetors, valves, and combustion chambers, it improves fuel stability and reduces harmful deposits. Each 15 oz bottle treats one tank with near-complete efficiency, making it a top-ranked choice for serious engine care and performance restoration. ## Description Concentrated, detergent-based fuel additive cleans injectors, carburetors, valves and combustion chamber deposits with a concentrated blend of the most powerful high-temp and low-temp detergents available, 15 Ounce (4 Pack). Review: Large concentrations of proven cleansers make this product a winner Review: REDUCES BUILD UP IN FUEL SYSTEM ## Features - DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel system cleaner treatment for cleaning and preventing corrosion in fuel systems - PERFORM AND PROTECT: Fuel additive cleans injectors, carburetors, valve and combustion chamber deposits with a powerful, concentrated blend of high-temp and low-temp detergents - EFFICIENT FUEL BURN: Gas treatment that enhances gasoline stability, while reducing the build up of gum and varnish formation - EASY TO USE: Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment - 15 Ounce (4 Pack) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00NQB6O0A | | Best Sellers Rank | #8,016 in Automotive ( See Top 100 in Automotive ) #20 in Automotive Fuel System Cleaners | | Brand | Red Line | | Brand Name | Red Line | | Contains Liquid Contents? | Yes | | Customer Reviews | 4.8 out of 5 stars 982 Reviews | | Item Form | Liquid | | Item Volume | 425 Milliliters | | Item Weight | 1.76 kg | | Item form | Liquid | | Item volume | 425 Milliliters | | Manufacturer | Red Line | | Material Features | Concentrated | | Material features | Concentrated | | Model Number | 60103 | | Part Number | 60103-4- | | Scent | Unscented | | Size | 15 Fl Oz (Pack of 4) | | Special Features | Concentrated | | Specific Uses For Product | Bottle | | Specific uses for product | Bottle | | UPC | 737534816455 | ## Product Details - **Brand:** Red Line - **Item form:** Liquid - **Material features:** Concentrated - **Scent:** Unscented - **Specific uses for product:** Bottle ## Images ![60103 SI-1 Complete Fuel System Cleaner - 15 Ounce (4 Pack) - Image 1](https://m.media-amazon.com/images/I/71PWCfm-XDL.jpg) ## Questions & Answers **Q: Do you need to change your oil after using this through a full tank of gas?** A: No need to change oil. This is a fuel additive that cleans fuel injectors to better mileage. Does work. **Q: Is this ok as y to use with diesel engines?** A: NO....use the one for diesel (Red Line 85 Plus Diesel Fuel Additive (12 oz.) (Quantity 1)) It is also available on Amazon in several qtys. **Q: does this also help clean the catalytic converter?** A: Maybe it cleans fuel system and injectors. Help clean the CAT? Sorry, I can't answer that question. **Q: Has anyone tried using this as for an engine flush? What were the results?** A: No, and why use it as an engine flush? This product was formulated and meant to be used as a fuel system cleaner and it's an effective one, at least in my case. I've been using in the past 4 years on 3 different vehicles. Best results you'll really notice is using it every 15-20k. Using it more frequently is just a waste. Now, going back to engine flush question, I've used BG EPR. I used it on my wife's 2010 CRV with 150k and0 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Large concentrations of proven cleansers make this product a winner *by A***R on 19 August 2022* ### ⭐⭐⭐⭐⭐ REDUCES BUILD UP IN FUEL SYSTEM *by L***R on 28 October 2020* ### ⭐⭐⭐⭐⭐ Red Line 60103-4pk *by D***B on 7 March 2026* ## Frequently Bought Together - Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce (4 Pack) - Liqui Moly Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2037 - Liqui Moly 2030 Pro-Line Gasoline System Cleaner, 500 ml, 16.91 Fl Oz (Pack of 1) --- ## 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.hr/products/604841028-60103-si-1-complete-fuel-system-cleaner-15-ounce-4](https://www.desertcart.hr/products/604841028-60103-si-1-complete-fuel-system-cleaner-15-ounce-4) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-20*