--- product_id: 636028248 title: "NuDEF" price: "R$32" currency: BRL in_stock: false reviews_count: 10 url: https://www.desertcart.com.br/products/636028248-nudef store_origin: BR region: Brazil --- # Treats up to 25 gallons of DEF Lowers DEF freezing point Protects SCR system components NuDEF **Price:** R$32 **Availability:** ❌ Out of Stock ## Summary > 🛠️ Keep your diesel running crystal-clear and worry-free all winter long! ## Quick Answers - **What is this?** NuDEF - **How much does it cost?** R$32 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/636028248-nudef) ## 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 - • **Trusted by Diesel Pros:** Highly rated with 4.6 stars and proven performance even in single-digit temps. - • **Freeze-Proof Your Fleet:** Lowers DEF freezing point to keep emissions systems running smoothly in harsh winters. - • **Maximize DEF Efficiency:** Breaks down existing urea crystals, reducing DEF consumption and saving you money. - • **Crystal Clear Protection:** Prevents costly urea crystallization that can damage your DEF tank, pump, and injector. - • **All-in-One DEF Stabilizer:** Treats up to 25 gallons, ensuring long-lasting protection for your diesel vehicle’s emission system. ## Overview NüDEF Diesel Exhaust Fluid Anti-Crystal Treatment is a powerful DEF additive designed to prevent urea crystallization, lower the freezing point of DEF, and protect critical SCR system components. Treating up to 25 gallons per application, it ensures reliable emissions performance and reduces costly maintenance, making it an essential winter safeguard for diesel vehicles. ## Description Product description Prevents DEF Crystals NuDEF's unique formulation stabilizes DEF and prevents system-clogging crystals from forming. Clears Clogged Lines & Injectors NuDEF's unmatched crystal-crushing power clears existing blockages caused by crystallized DEF. Lowers Freezing Point of DEF Helps DEF stay flowing in the harshest conditions. Lubricates & Protects Helps maintain a clean DEF system and lubricates system components. Complete DEF system maintenance in every dose Add NuDEF directly to your DEF tank or jug while filling for enhanced protection and cleaning. NuDEF is also great for preserving partially used jugs of DEF or large DEF storage tanks. Use with every DEF fill-up Each dose treats 2.5 gallons of DEF Each bottle of NuDEF treats 25 gallons of DEF Prevent partially used jugs of DEF from crystallizing Stabilize DEF in large storage tanks Compatible with all brands of Urea DEF / Adblue NuDEF tackles the #1 cause of DEF system failure, and more DEF crystallization & DEF crystal deposits Over time DEF can crystallize within the tank, lines, pump and injectors. These DEF crystal deposits block the flow of DEF and can even lead to premature failure of DEF system components. Prevent costly repairs with regular use of NuDEF. NuDEF’s triple-action formula is the world’s first DEF treatment and stabilizer designed to help fix, maintain, and prevent issues with your truck’s DEF system. Extreme weather High and low temperatures also take their toll on DEF system components. Extreme heat can accelerate the crystallization of DEF while extremely cold temperatures can cause DEF to freeze solid and potentially damage DEF system parts. NuDEF combats temperature related DEF issues by preventing DEF from evaporating quickly and lowering the freezing point of DEF. Wear and tear DEF crystal blockages and extreme weather create unnecessary wear and tear on your DEF system. DEF pumps need to work harder in order to keep the DEF flowing while lines and injectors can clog up and stop the flow of DEF completely. Regular use of NuDEF not only keeps all system components clean, it also lubricates delicate parts. For use in all diesel engines with DEF Cars & SUVs Light duty trucks Heavy duty trucks Semi-trucks RVs Heavy equipment American Owned - American Made NuDEF is dedicated to keeping American trucks and heavy equipment moving. NuDEF can help prevent the following diagnostic trouble codes (DTCs) Review: It did the job! - I’ve had diesel equipment for almost 30 years and the new truck has all the pollution crap on it. This year we were having a really cold winter and I was getting alarms about emissions problems. I read it could be due to the DEF freezing. I believed that was my issue so I purchased this product. I can say I have not had a single issue after I have added the product to the def. And for the record we have had several single digit days. It sucks we have to buy another product to keep our trucks running but this product seems to do the job! I’ll use next winter to avoid any problems. Review: Prevent costly urea crystallization - If you drive a diesel that requires DEF you need this product now! It will save you hundreds to thousands of $$ because it prevents urea nidus crystals from forming. Once you have urea crystallization in your DEF tank it will always continue to be a problem. NuDEF breaks down the urea crystals that form. This reduces the use of DEF your vehicle is forced to cycle through by the sensors that monitor urea crystal formation. It saves you money on DEF and fuel. And it protects your vehicle. ## Features - Helps prevent DEF crystallization - Lowers freezing point of DEF - Protects SCR system DEF tank, pump & injector - Treats up to 25 gallons of DEF ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D5ZK5FX4 | | Best Sellers Rank | #17,034 in Automotive ( See Top 100 in Automotive ) #28 in Diesel Additives | | Brand | NuDEF | | Customer Reviews | 4.6 4.6 out of 5 stars (236) | | Date First Available | June 3, 2024 | | Item Weight | 10.2 ounces | | Item model number | 197644138449 | | Manufacturer | NuDEF | | Manufacturer Part Number | 197644138449 | | Model | NuDEF | | Product Dimensions | 2 x 2 x 6.5 inches | ## Images ![NuDEF - Image 1](https://m.media-amazon.com/images/I/71yUFCKbo-L.jpg) ![NuDEF - Image 2](https://m.media-amazon.com/images/I/71-RjeNv53L.jpg) ![NuDEF - Image 3](https://m.media-amazon.com/images/I/712H7fBaUjL.jpg) ![NuDEF - Image 4](https://m.media-amazon.com/images/I/81-GYqhbLbL.jpg) ## Available Options This product comes in different **Number Of Items** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It did the job! *by V***Y on March 21, 2026* I’ve had diesel equipment for almost 30 years and the new truck has all the pollution crap on it. This year we were having a really cold winter and I was getting alarms about emissions problems. I read it could be due to the DEF freezing. I believed that was my issue so I purchased this product. I can say I have not had a single issue after I have added the product to the def. And for the record we have had several single digit days. It sucks we have to buy another product to keep our trucks running but this product seems to do the job! I’ll use next winter to avoid any problems. ### ⭐⭐⭐⭐⭐ Prevent costly urea crystallization *by S***D on August 21, 2025* If you drive a diesel that requires DEF you need this product now! It will save you hundreds to thousands of $$ because it prevents urea nidus crystals from forming. Once you have urea crystallization in your DEF tank it will always continue to be a problem. NuDEF breaks down the urea crystals that form. This reduces the use of DEF your vehicle is forced to cycle through by the sensors that monitor urea crystal formation. It saves you money on DEF and fuel. And it protects your vehicle. ### ⭐⭐⭐⭐⭐ Keep the DEF light off. *by B***N on August 11, 2025* Before, I was getting an error warning saying the DEF quality was insufficient. No restarts after 250 miles. So I purchased a code scanner and reset the code. Error came on again after 100 miles or so.. I tried a local repair shop and they said “dealer only repair” wouldn’t touch it. Here’s the Great News! I purchased this product and have had No problems since. This bottle has saved me from expensive repair bills. Thanks! ## Frequently Bought Together - NüDEF Diesel Exhaust Fluid Anti-Crystal Treatment - Treats 25 Gallons - DEF Additive & Stabilizer - Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 oz) + AR6400-D Diesel Fuel System Cleaner - Rislone 4780 Diesel DEF Treatment | Prevents AdBlue/DEF Fluid Crystallization, 8 oz --- ## 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.com.br/products/636028248-nudef](https://www.desertcart.com.br/products/636028248-nudef) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-05-23*