--- product_id: 603801989 title: "Rislone 4784 Crystal Clean Diesel DEF & SCR Emission System Cleaner, 1-Pack" brand: "rislone" price: "5438 kr" currency: ISK in_stock: true category: "Rislone" url: https://www.desertcart.is/products/603801989-rislone-4784-crystal-clean-diesel-def-and-scr-emission-system store_origin: IS region: Iceland --- # Compatible with all DEF/AdBlue systems 11.8 fl oz precision formula Prevents SCR crystallization every 5,000 miles Rislone 4784 Crystal Clean Diesel DEF & SCR Emission System Cleaner, 1-Pack **Brand:** rislone **Price:** 5438 kr **Availability:** ✅ In Stock ## Summary > 🛠️ Keep your diesel running pristine — because your ride deserves the cleanest edge! ## Quick Answers - **What is this?** Rislone 4784 Crystal Clean Diesel DEF & SCR Emission System Cleaner, 1-Pack by rislone - **How much does it cost?** 5438 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/603801989-rislone-4784-crystal-clean-diesel-def-and-scr-emission-system) ## Best For - rislone enthusiasts ## Why This Product - Trusted rislone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Fuel Economy Booster:** Prevents limp mode by optimizing emissions system, saving fuel and power - • **Warranty-Safe Formula:** Engineered to maintain your vehicle’s new car warranty with zero risk - • **Easy Maintenance Ritual:** Simple add-in treatment every 5,000 miles keeps your diesel running clean and smooth - • **Crystal Clear Performance:** Dissolves white crystal deposits to restore full SCR system efficiency - • **Universal DEF Compatibility:** Works seamlessly with all major diesel exhaust fluids including AdBlue, AUS 32, and BlueTEC ## Overview Rislone 4784 Crystal Clean is a specialized 11.8 oz liquid treatment designed exclusively for Diesel Exhaust Fluid (DEF) tanks. It effectively dissolves harmful white crystal deposits in SCR emission systems, preventing power loss and limp mode. Compatible with all DEF types and safe for vehicles with DOC, DPF, SCR, and ASC systems, it maintains optimal engine performance without voiding warranties. Regular use every 5,000 miles ensures cleaner emissions and improved fuel efficiency. ## Description RISLONE® DEF CRYSTAL CLEANTM Diesel DEF & SCR Emissions System Cleaner is a propriety blend of DEF (Diesel Exhaust Fluid) / AdBlue® compatible cleaning agents and surfactant detergents specifically designed to be safe to use and work on SCR (Selective Catalyst Reduction) systems. DEF Crystal Clean gives a cleaning effect on the entire SCR system by working to dissolve the white crystal deposits that form in the tank, pump, heater, sender, lines, injector, decomposition tube / reactor and mixer. These deposits can interfere with the normal operation of the SCR emissions system and engine, increasing fuel consumption and reducing engine power. This reduced power can lead to operating in limp mode where the vehicle will drive slowly, or become undrivable. This process restores function and with regular use maintains efficiency of the SCR. DO NOT ADD TO DIESEL FUEL TANK. INSTRUCTIONS: DEF Crystal Clean is specifically designed to only be installed in the Diesel Exhaust Fluid / AdBlue tank which usually has a blue cap. Do not add to the diesel fuel tank. * Light Truck or Mid-Size to Large SUV - 5 to 9 gallon tank capacity install full bottle into DEF tank. *Car or Small SUV - 3 to 5 gallon tank capacity use approximately 1/2 bottle. *Medium and Heavy Duty Diesel Trucks - 10 to 20 gallon tank capacity use 2 bottles. Pour DEF Crystal Clean into mostly full DEF tank or add and fill tank with diesel exhaust fluid. If light is still on after 250 miles or a few days of driving, second application may be required, or mechanical attention is needed. NOTE: Works with all approved diesel exhaust fluids. Some vehicles use a special filling adapter to install DEF / AdBlue into the tank. For those vehicles use special funnel or pour into mostly empty DEF / AdBlue bottle and install in system. ## Features - Excellent for diesel vehicles driven regularly at slow speeds, low loads, short durations or make frequent stops as these are more prone to having the problem of crystallization deposit build up in the SCR system. - Regular use every 5,000 miles not only keeps the system clean, but works to prevent the white crystallization issues from returning. - Will not void manufacturer’s new vehicle warranty. Specifically designed and safe to use on vehicles which have DOC catalytic converters, DPF particulate filters, SCR selective catalytic reduction devices, ASC ammonia slip catalyst or DEF / AdBlue systems. - Works with all AdBlue, Aria 32 (Automotive Nitrogen Oxide Liquid Reducing Agent), AUS 32 (Aqueous Urea Solution), BlueHDi, BlueTEC, Cummins, DEF UREA, Duramax, EcoDiesel, PowerStroke, TDI Clean Diesel, and many more. - DEF Crystal Clean is specifically designed to only be installed in the Diesel Exhaust Fluid / AdBlue tank which usually has a blue cap. Do not add to the diesel fuel tank. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CRSY78LR | | Best Sellers Rank | #3,638 in Automotive ( See Top 100 in Automotive ) #15 in Fuel System Cleaners | | Brand Name | Rislone | | Customer Reviews | 4.6 4.6 out of 5 stars (577) | | Included Components | (1) DEF and SCR Treatment | | Item Form | Liquid | | Item Highlight | Improves DEF Diesel Exhaust Fluid, Restores SCR Selective Catalyst Reduction, Cleans DEF Injector & Sender, 11.8 oz | | Item Type Name | Diesel DEF & SCR Emissions System Cleaner | | Item Volume | 11.8 fluid ounces | | Manufacturer | Bar's Products | | Material Features | Scented | | Model Number | 4784 | | Number of Items | 1 | | Part Number | 4784 | | Scent | Unique | | Size | 1 Fl Oz (Pack of 1) | | Special Features | Automotive | | Specific Uses For Product | Automotive DEF additive | | Surface Recommendation | Automotive | | UPC | 078615047840 | | Unit Count | 1 Fluid Ounces | | Warranty Description | Please see manufacturer | ## Product Details - **Brand:** Rislone - **Item Form:** Liquid - **Material Feature:** Scented - **Scent:** Unique - **Specific Uses For Product:** Automotive DEF additive ## Images ![Rislone 4784 Crystal Clean Diesel DEF & SCR Emission System Cleaner, 1-Pack - Image 1](https://m.media-amazon.com/images/I/71hRUzjYRyL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Rislone 4784 DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz - Rislone 4780 Diesel DEF Treatment | Prevents AdBlue/DEF Fluid Crystallization, 8 oz - Rislone® 4744 DPF Clean™ Diesel DPF, Exhaust & Emissions System Cleaner, 16.9 oz, 1-Pack --- ## 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.is/products/603801989-rislone-4784-crystal-clean-diesel-def-and-scr-emission-system](https://www.desertcart.is/products/603801989-rislone-4784-crystal-clean-diesel-def-and-scr-emission-system) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-09-06*