--- product_id: 510548641 title: "Wynn's Crystal Clean & Protect - Prevents AdBlue® Crystallisation - 125ml" brand: "wynn's" price: "21361CFA" currency: XOF in_stock: true reviews_count: 13 category: "Wynn's" url: https://www.desertcart.sn/products/510548641-wynns-crystal-clean-and-protect-prevents-adblue-crystallisation-125ml store_origin: SN region: Senegal --- # Cleans SCR system components Reduces downtime & costly repairs Prevents AdBlue crystallisation Wynn's Crystal Clean & Protect - Prevents AdBlue® Crystallisation - 125ml **Brand:** wynn's **Price:** 21361CFA **Availability:** ✅ In Stock ## Summary > ❄️ Keep your diesel running crystal clear — because downtime is so last decade! ## Quick Answers - **What is this?** Wynn's Crystal Clean & Protect - Prevents AdBlue® Crystallisation - 125ml by wynn's - **How much does it cost?** 21361CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/510548641-wynns-crystal-clean-and-protect-prevents-adblue-crystallisation-125ml) ## Best For - wynn's enthusiasts ## Why This Product - Trusted wynn's brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Spotless SCR System:** Dissolves early deposits in injectors, pumps, and tanks for peak efficiency. - • **Eco & Wallet Friendly:** Optimizes AdBlue dosing to reduce emissions and improve fuel economy. - • **Drive Without Downtime:** Prevents unexpected breakdowns, keeping your diesel engine reliably on the road. - • **Plug & Play Protection:** Easy, tool-free application—just add to your AdBlue tank at every refill. - • **Crystal Clear Performance:** Stops harmful AdBlue crystals before they form, protecting your SCR system. ## Overview Wynn's Crystal Clean & Protect is a 125ml additive designed to prevent AdBlue crystallisation in diesel SCR systems. By dissolving early crystal deposits in injectors, pumps, and tanks, it maintains optimal system performance, reduces emissions, and prevents costly repairs and downtime. Compatible with all AdBlue and DEF systems, it treats up to 15 litres per bottle and is easy to apply during refills, making it an essential maintenance product for diesel vehicles and commercial fleets. ## Description Maintaining a clean and efficient Selective Catalytic Reduction (SCR) system is essential for diesel vehicles that utilise AdBlue as part of their emission control strategy. This advanced additive, developed specifically for use with AdBlue, helps prevent the formation of harmful crystals that can compromise the performance of the SCR system. Crystal deposits may accumulate over time in the AdBlue tank, injector, or pump unit, leading to restricted fluid flow, reduced system efficiency, and costly mechanical issues. This treatment works to dissolve early-stage crystallisation, ensuring critical SCR components remain clean and unobstructed. By keeping the system free from deposits, it supports smoother operation, improved dosing accuracy, and optimal conversion of NOx emissions—helping diesel engines meet stringent environmental standards. The regular use of this additive for AdBlue helps extend the lifespan of the SCR system, reducing the risk of unexpected breakdowns and vehicle downtime. Whether in private diesel cars or commercial fleets, it contributes to better fuel efficiency, reliable performance, and consistent emissions compliance. Formulated to be fully compatible with all recognised AdBlue and Diesel Exhaust Fluid (DEF) types, the additive is simple to apply—just pour it directly into the AdBlue tank during refills. Each 125ml bottle treats up to 15 litres of AdBlue, making it a convenient and cost-effective solution for preventive maintenance. For best results, it is recommended to use the product at every AdBlue refill to provide ongoing protection against crystallisation and keep the SCR system operating at peak performance. Review: This stuff is worth its weight in gold! - This stuff is amazing. Had the dreaded Adblue system failure message on my BMW 520d. Read other reviews saying it cleared up error messages. Didn’t hold much hope but thought I’d give it a whirl. Added 2 bottles to a full tank of Adblue. It took some time (about 3 months) but one day I switched the car on and the persistent error had gone and no longer any engine light! Will use this now every time I top up the Adblue to keep the crystallisation at bay. Worth its weight in gold! Review: Seems to have done the trick - Unstuck the level. The AdBlue level didn’t increase till I added this, then only gradually. Not sure it was this that cured it, but seems to be showing AdBlue level correctly now! ## Features - Causes serious eye damage. - Contains 1,2-benzisothiazol-3(2H)-one. May produce an allergic reaction. - ✅ HELPS PREVENT CRYSTAL FORMATION IN SYSTEMS USING ADBLUE: Specially formulated for use with AdBlue, this additive helps prevent the formation of harmful crystals in the SCR (Selective Catalytic Reduction) system. By keeping components such as the injector, pump, and AdBlue tank clean, it supports the continuous and efficient operation of the emissions control system and helps reduce the risk of costly repairs due to crystallisation. - ✅ CLEANING EFFECT FOR SCR COMPONENTS: Designed to work in conjunction with AdBlue, this treatment provides an effective cleaning action for SCR system components, including the tank and injector. It dissolves early crystal formations before they build into hard deposits, ensuring that the system remains clean and efficient. This contributes to better fluid atomisation and optimal performance of the diesel exhaust treatment process. - ✅ ENHANCES THE PERFORMANCE OF SYSTEMS THAT USE ADBLUE: When used regularly, this product optimises the performance of the SCR system by maintaining clean operating conditions for all key components. Cleaner injectors and pumps support more accurate AdBlue dosing, reducing emissions and contributing to better fuel economy and environmental compliance. - ✅ HELPS AVOID DOWNTIME AND SYSTEM FAILURES: Crystallisation in systems using AdBlue can lead to unexpected vehicle breakdowns and maintenance issues. This additive helps to prevent those issues, keeping your diesel engine running smoothly and reducing the risk of sudden system failure. It's particularly valuable for commercial fleets and long-distance drivers who depend on consistent reliability. - ✅ SAFE FOR ALL VEHICLES USING ADBLUE – EASY APPLICATION: This product is compatible with all Diesel Exhaust Fluid (DEF) and AdBlue systems. It can be added directly to the AdBlue tank without any special tools or procedures. One 125ml bottle treats up to 15 litres of AdBlue, providing cost-effective and preventive maintenance every time you refill. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BV7BNHDT | | Best Sellers Rank | 160 in Automotive ( See Top 100 in Automotive ) 8 in Fuel Systems | | Brand | Wynn's | | Customer Reviews | 4.6 4.6 out of 5 stars (2,188) | | Date First Available | 8 Feb. 2023 | | Item model number | 21002 | | Manufacturer | Wynn's | | Manufacturer part number | 21002 | | Model | AdBlue Crystal Clean & Protect - 125ml | | Package Dimensions | 31.8 x 21.3 x 4.4 cm; 0.14 g | ## Images ![Wynn's Crystal Clean & Protect - Prevents AdBlue® Crystallisation - 125ml - Image 1](https://m.media-amazon.com/images/I/61PjKa6yTGL.jpg) ![Wynn's Crystal Clean & Protect - Prevents AdBlue® Crystallisation - 125ml - Image 2](https://m.media-amazon.com/images/I/51CHuy5ocCL.jpg) ![Wynn's Crystal Clean & Protect - Prevents AdBlue® Crystallisation - 125ml - Image 3](https://m.media-amazon.com/images/I/615689z6U8L.jpg) ![Wynn's Crystal Clean & Protect - Prevents AdBlue® Crystallisation - 125ml - Image 4](https://m.media-amazon.com/images/I/513JipLLJHL.jpg) ![Wynn's Crystal Clean & Protect - Prevents AdBlue® Crystallisation - 125ml - Image 5](https://m.media-amazon.com/images/I/51TJIwyzcnL.jpg) ## Questions & Answers **Q: Can you mix this with the adblue as i top it up regularly so don’t use a ful 15 l everytime** A: Read instructions on the back , says add to full tank small bottle really. **Q: My adblue warning has come on and will not go out even after filling up to full. Will this remove any crystals from my tank?** A: Yes it will but sometimes you need to run your engine for 20 miles before it will go out ## Customer Reviews ### ⭐⭐⭐⭐⭐ This stuff is worth its weight in gold! *by R***T on 25 October 2025* This stuff is amazing. Had the dreaded Adblue system failure message on my BMW 520d. Read other reviews saying it cleared up error messages. Didn’t hold much hope but thought I’d give it a whirl. Added 2 bottles to a full tank of Adblue. It took some time (about 3 months) but one day I switched the car on and the persistent error had gone and no longer any engine light! Will use this now every time I top up the Adblue to keep the crystallisation at bay. Worth its weight in gold! ### ⭐⭐⭐⭐⭐ Seems to have done the trick *by M***E on 18 June 2026* Unstuck the level. The AdBlue level didn’t increase till I added this, then only gradually. Not sure it was this that cured it, but seems to be showing AdBlue level correctly now! ### ⭐⭐⭐⭐ Item as described *by M***S on 21 May 2026* Item as described. Quick delivery ## Frequently Bought Together - Wynn's stabilizing/protective AdBlue additive, 125 ml, 21002 - 2 bottles DPF Filter Purge: The Most Economical Way to Clean and Protect Your Diesel Particulate Filter, Diesel Additive, High Performance Helps Regeneration No Assembling 500ml 16.9 oz x 2 --- ## 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.sn/products/510548641-wynns-crystal-clean-and-protect-prevents-adblue-crystallisation-125ml](https://www.desertcart.sn/products/510548641-wynns-crystal-clean-and-protect-prevents-adblue-crystallisation-125ml) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-08-13*