---
product_id: 692659021
title: "Rislone DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz"
brand: "rislone"
price: "A$76"
currency: AUD
in_stock: true
reviews_count: 5
category: "Rislone"
url: https://www.desertcart.com.au/products/692659021-rislone-def-crystal-clean-diesel-def-and-scr-emissions-system
store_origin: AU
region: Australia
---

# Safe for DOC, DPF, SCR & DEF systems Use every 5,000 miles for peak performance Dissolves SCR crystal deposits Rislone DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz

**Brand:** rislone
**Price:** A$76
**Availability:** ✅ In Stock

## Summary

> 🚛 Keep your diesel running clean, lean, and mean with Rislone DEF Crystal Clean™!

## Quick Answers

- **What is this?** Rislone DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz by rislone
- **How much does it cost?** A$76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/692659021-rislone-def-crystal-clean-diesel-def-and-scr-emissions-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

- • **Plug & Play Clean:** Easy dosing directly into DEF tank—no fuel tank risk, no hassle
- • **Preventive Powerhouse:** Regular use stops costly DEF consumption spikes and limp mode slowdowns
- • **Crystal Clear Efficiency:** Eliminates white crystallization to restore SCR system power and fuel economy
- • **Warranty-Friendly Formula:** Maintains vehicle warranty while optimizing emissions system health
- • **Engineered for Every Diesel:** Compatible with all major DEF fluids and diesel emission tech including BlueTEC & PowerStroke

## Overview

Rislone DEF Crystal Clean™ is a specialized 11.8 oz cleaner designed to dissolve harmful white crystal deposits in diesel SCR emissions systems. Safe for all DEF fluids and emission components like DOC, DPF, and SCR, it prevents power loss, reduces DEF consumption, and maintains optimal engine performance without voiding warranties. Ideal for diesel vehicles prone to crystallization from frequent stops or low-load driving, it’s recommended every 5,000 miles for sustained emissions system health.

## 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: 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: Works good, cleared the p20ee code

## 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 |
| Brand | Rislone |
| Customer Reviews | 4.5 4.5 out of 5 stars (410) |
| Date First Available | 15 January 2025 |
| Item Weight | 431 g |
| Item model number | 4784 |
| Manufacturer | Bar's Products |
| Manufacturer Part Number | 4784 |
| Model | Diesel DEF & SCR Emissions |
| Package Dimensions | 22.91 x 7.01 x 6.91 cm; 431 g |
| Special Features | Automotive |

## Images

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***Y on 25 January 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.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 18 January 2026*

Works good, cleared the p20ee code

### ⭐⭐⭐⭐⭐ Review
*by A***R on 29 March 2025*

As always, I'm skeptical when it comes to product performance—but this one? Amazing. I never owned a diesel until I bought my '21 GMC HD2500 Duramax. I love it, but man, diesel engines demand preventive maintenance. You can't wait for things to break—you’ve got to stay ahead of it with products that help reduce or even prevent issues. This particular product is excellent. Since the day I bought my truck, I’ve had nonstop problems with the DEF tank sensors sticking. Sometimes it would show full when I knew it wasn’t, and other times it claimed to be half empty right after a fresh fill-up. Totally unreliable. And what did the dealer say? “It’s inadvertent.” That word should be banned—it’s just an excuse to ignore a real problem. Let me tell you—this product works. Period. And it worked fast, too. Absolutely amazing.

## 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 Australia*
*Store origin: AU*
*Last updated: 2026-02-01*