---
product_id: 605736779
title: "4780 Diesel Exhaust Fluid (DEF) Treatment, 8 oz, 1-Pack"
brand: "rislone"
price: "$33.59"
currency: USD
in_stock: true
category: "Rislone"
url: https://www.desertcart.us/products/605736779-4780-diesel-exhaust-fluid-def-treatment-8-oz-1-pack
store_origin: US
region: United States of America
---

# Compatible with all UREA AdBlue fluids Prevents DEF crystallization Protects SCR system components 4780 Diesel Exhaust Fluid (DEF) Treatment, 8 oz, 1-Pack

**Brand:** rislone
**Price:** $33.59
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your diesel running smooth—because costly repairs are so last season!

## Quick Answers

- **What is this?** 4780 Diesel Exhaust Fluid (DEF) Treatment, 8 oz, 1-Pack by rislone
- **How much does it cost?** $33.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/605736779-4780-diesel-exhaust-fluid-def-treatment-8-oz-1-pack)

## 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

- • **Full System Shield:** Guards your tank, pump, heater, sender, lines, injector, and mixer from harmful buildup.
- • **Warranty Safe Formula:** Works seamlessly with all UREA AdBlue fluids without voiding your vehicle’s warranty.
- • **Every Fill, Every Time:** Use with every DEF refill to maintain peak diesel exhaust fluid performance and engine efficiency.
- • **Ideal for Urban Drivers:** Perfect for diesel vehicles with frequent stops, low loads, or slow speeds prone to crystallization.
- • **Crystal Clear Protection:** Stops costly white crystalline deposits before they form, saving you from expensive SCR repairs.

## Overview

Rislone 4780 Diesel DEF Treatment is an 8 oz anti-crystallization additive designed to prevent white crystalline deposits in SCR diesel exhaust fluid systems. Compatible with all UREA AdBlue fluids, it protects critical DEF components and helps avoid expensive repairs, especially for diesel vehicles frequently driven at low speeds or with frequent stops. Regular use with every DEF refill ensures optimal engine performance and maintains manufacturer warranty compliance.

## Description

Accumulation of harmful white crystalline deposits within the Selective Catalytic Reduction (SCR) Diesel Exhaust Fluid (DEF) system can lead to expensive repairs. It is important to take all possible measures to prevent their formation. Beyond the financial burden, these deposits can reduce engine performance, increase fuel consumption, and potentially render the vehicle or machinery inoperative. RISLONE® DIESEL DEF TREATMENT is an anti- crystallization solution that is used every time filling the DEF / AdBlue® tank. INSTRUCTIONS: Measure required amount per dosage chart below and pour directly into DEF tank or into DEF bottle / cube when refilling tank. Light Truck or Mid-Size to Large SUV—4 ounces; Car or Small SUV—2 ounces; Medium and Heavy Duty Diesel Trucks—8 ounces Equipment & Machinery—8 ounces per every 10 gallons; Cube (2-1/2 gallon)—2 ounces. Only add to DEF or AdBlue Fluid, do not add to diesel fuel.

## Features

- RISLONE DIESEL DEF TREATMENT is an anti- crystallization solution that is used every time filling the DEF / AdBlue tank.
- Improves diesel exhaust fluid and avoids costly SCR / DEF system repairs; protects the tank, pump, heater, sender, lines, injector and mixer.
- Regular use every time refilling the DEF / AdBlue tank works to prevent the white crystallization deposits from occurring.
- Works with all UREA AdBlue DEF diesel exhaust fluids and will not void manufacturer’s new vehicle warranty.
- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRSNDVHW |
| Best Sellers Rank | #7,864 in Automotive ( See Top 100 in Automotive ) #16 in Diesel Additives |
| Brand | Rislone |
| Customer Reviews | 4.6 4.6 out of 5 stars (521) |
| Date First Available | January 8, 2024 |
| Item Weight | 10 ounces |
| Item model number | 4780 |
| Manufacturer | Bar's Products |
| Manufacturer Part Number | 4780 |
| Model | DEF Treatment |
| Package Dimensions | 6.26 x 3.58 x 1.57 inches |

## Images

![4780 Diesel Exhaust Fluid (DEF) Treatment, 8 oz, 1-Pack - Image 1](https://m.media-amazon.com/images/I/61i3F96opbL.jpg)

## Available Options

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

## Frequently Bought Together

- Rislone 4780 Diesel DEF Treatment | Prevents AdBlue/DEF Fluid Crystallization, 8 oz
- Rislone 4784 DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner, 11.8 oz
- Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 oz) + AR6400-D Diesel Fuel System Cleaner

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-27*