---
product_id: 603801989
title: "Rislone 4784 DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz"
brand: "rislone"
price: "$1242"
currency: MXN
in_stock: true
reviews_count: 8
category: "Rislone"
url: https://www.desertcart.mx/products/603801989-rislone-4784-def-crystal-clean-diesel-def-and-scr-emissions
store_origin: MX
region: Mexico
---

# Prevents crystallization every 5,000 miles SCR system safe formula Compatible with all DEF/AdBlue tanks Rislone 4784 DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz

**Brand:** rislone
**Price:** $1242
**Availability:** ✅ In Stock

## Summary

> 🚛 Keep your diesel running clean and lean—because every mile counts!

## Quick Answers

- **What is this?** Rislone 4784 DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz by rislone
- **How much does it cost?** $1242 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/603801989-rislone-4784-def-crystal-clean-diesel-def-and-scr-emissions)

## 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

- • **Easy Application:** Simply add to the DEF tank—no engine modifications or fuel tank risks.
- • **Universal Compatibility:** Works seamlessly with all major DEF fluids and diesel emission systems.
- • **Crystal Clear Efficiency:** Dissolves white crystal deposits to restore peak SCR system performance.
- • **Drive Longer, Refuel Less:** Reduces DEF consumption dramatically, extending refill intervals up to 2x.
- • **Warranty-Friendly Formula:** Safe for all diesel vehicles without voiding manufacturer warranties.

## Overview

Rislone 4784 DEF Crystal Clean™ is a cutting-edge emissions system cleaner designed specifically for diesel vehicles’ SCR and DEF systems. It effectively dissolves harmful crystallization deposits that impair engine power and increase DEF consumption. Compatible with all major DEF fluids and emission technologies, it maintains system efficiency with regular use every 5,000 miles, all while preserving your vehicle’s warranty. Ideal for professionals who demand reliability and performance from their diesel fleet.

## 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.

Review: 2016 Ram 1500 Ecodiesel DEF Consumption - We have a 2016 Ram 1500 Ecodiesel and prior to using this product I was eating up half a tank of DEF every month. I ran back to back bottles and started using the DEF at our local Fry’s store. The DEF consumption went down dramatically. Folks, this stuff really works. We are having to fill the DEF every two months now. Fantastic product and works extremely well.
Review: This product works! - I bought a used 2021 F250 with 75k miles. At first it was drinking DEF. I used 3/4 of a tank on a 900 mile road trip. I used this product on the first tank on my 5900 mile move to Alaska from Virginia. The first 3/4 tank of DEF, with the product in it, got me to Indianapolis, about 800 miles. The second tank I started using the Rislone DEF Treatment in every box I put in the truck, it got me to Mitchell, SD which was about 1000 miles and I used half a tank. About 1200 miles later I put 1 box of DEF in before I crossed into Canada, and stocked up on 3 boxes knowing I had about 3k more to go. Keep in mind, I'm hauling a 20ft enclosed trailer full of all my earthly possessions, and I have quite a few tools and heavy things. Something happened after that first 3k miles. I made it the next 3k miles and only used 1/2 tank. Now when I fill up it says 7500 miles to empty. I don't know if that's true, but it's been a long time since I've had to buy DEF.

## 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 | #2,922 in Automotive ( See Top 100 in Automotive ) #15 in Fuel System Cleaners |
| Brand | Rislone |
| Customer Reviews | 4.5 4.5 out of 5 stars (470) |
| Date First Available | January 9, 2024 |
| Item Weight | 15.2 ounces |
| Item model number | 4784 |
| Manufacturer | Bar's Products |
| Manufacturer Part Number | 4784 |
| Model | Diesel DEF & SCR Emissions |
| Package Dimensions | 9.02 x 2.76 x 2.72 inches |
| Special Features | Automotive |

## Images

![Rislone 4784 DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz - Image 1](https://m.media-amazon.com/images/I/71hRUzjYRyL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 2016 Ram 1500 Ecodiesel DEF Consumption
*by T***Y on January 25, 2026*

We have a 2016 Ram 1500 Ecodiesel and prior to using this product I was eating up half a tank of DEF every month. I ran back to back bottles and started using the DEF at our local Fry’s store. The DEF consumption went down dramatically. Folks, this stuff really works. We are having to fill the DEF every two months now. Fantastic product and works extremely well.

### ⭐⭐⭐⭐⭐ This product works!
*by M***D on November 17, 2025*

I bought a used 2021 F250 with 75k miles. At first it was drinking DEF. I used 3/4 of a tank on a 900 mile road trip. I used this product on the first tank on my 5900 mile move to Alaska from Virginia. The first 3/4 tank of DEF, with the product in it, got me to Indianapolis, about 800 miles. The second tank I started using the Rislone DEF Treatment in every box I put in the truck, it got me to Mitchell, SD which was about 1000 miles and I used half a tank. About 1200 miles later I put 1 box of DEF in before I crossed into Canada, and stocked up on 3 boxes knowing I had about 3k more to go. Keep in mind, I'm hauling a 20ft enclosed trailer full of all my earthly possessions, and I have quite a few tools and heavy things. Something happened after that first 3k miles. I made it the next 3k miles and only used 1/2 tank. Now when I fill up it says 7500 miles to empty. I don't know if that's true, but it's been a long time since I've had to buy DEF.

### ⭐⭐⭐⭐⭐ Thousands of Dollars saved.
*by R***F on March 1, 2026*

BMW of Roseville diagnosed a faulty SCR sensor. $6,700 for a new DEF tank was quoted. Rislone fixed it for $20.

## 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

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---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-03-15*