---
product_id: 16858950
title: "Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More"
brand: "irontite"
price: "€ 137.66"
currency: EUR
in_stock: true
reviews_count: 9
category: "Irontite"
url: https://www.desertcart.fr/products/16858950-irontite-3-pack-cooling-system-additives-thoro-flush-all-weather
store_origin: FR
region: France
---

# treats up to 6 gallons per bottle up to 10% improved cooling performance 3-step all-in-one cooling system repair Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More

**Brand:** irontite
**Price:** € 137.66
**Availability:** ✅ In Stock

## Summary

> 🚗 Seal the deal on engine leaks before they seal your fate!

## Quick Answers

- **What is this?** Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More by irontite
- **How much does it cost?** € 137.66 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/16858950-irontite-3-pack-cooling-system-additives-thoro-flush-all-weather)

## Best For

- irontite enthusiasts

## Why This Product

- Trusted irontite brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proven Leak Prevention:** Ceramic Motor Seal forms a rock-hard barrier that seals cracks and gasket leaks, trusted by pros for over 50 years.
- • **Rust & Scale Eradicator:** Thoro-Flush removes rust, sludge, and gelled Dex-Cool, restoring coolant flow and preventing costly overheating.
- • **Instant Leak Fix on the Go:** All Weather Seal activates at operating temperature to patch leaks seamlessly—compatible with all coolants and engine types.
- • **Complete 3-Step Engine Revival:** Flush, seal, and protect your cooling system with Thoro-Flush, Ceramic Motor Seal, and All Weather Seal for unmatched engine care.
- • **Easy, Cost-Effective Maintenance:** Each bottle treats up to 6 gallons, making this premium kit a smart investment to avoid expensive repairs and downtime.

## Overview

Irontite 3-Pack Cooling System Additives deliver a powerful, professional-grade 3-step solution to clean, seal, and protect your vehicle’s cooling system. Designed for all engine types and coolants, this kit removes rust and scale, permanently seals leaks with ceramic technology, and instantly patches new leaks with an all-weather formula. Trusted by enthusiasts and commercial users alike, it’s an essential preventative maintenance tool that boosts cooling efficiency by up to 10%, extends engine life, and saves you from costly repairs.

## Description

Buy Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More: Cooling System - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Worked 99pct!!! - I did the whole 3 stage process on a 2004 Subaru XS (EJ25 single cam, non turbo), which was consuming a gallon of water per 100 miles on the interstate at 70mph, far less miles in town. Left the coolant system with the thermostat removed for 2 days for the second step to "cure" because I had the time. It currently consumes less than a few oz in the same period. A very effective bandaid staving off a head gasket for now. The coolant system capacity meant I only used 1/3 the bottles for the treatment, as directed. Highly recommended!!!
Review: Excelent products and fast delivery - I have used these products for many years and they work better than any others I have found so far. The only caution is with the block cleaner... it cleans the whole system if you have an older vehicle use with caution because it may clean out some sludge in the cooling system and you may find a few leaks in your radiator or heater core in older vehicles that don't get regular maintenance. don't get me wrong these are very good products just don't leave the cleaner in too long in older vehicles. These do exactly what they are supposed to and no less..

## Features

- Ultimate 3-Step Cooling System Repair Kit: Includes Thoro-Flush, Ceramic Motor Seal, and All Weather Seal - three powerful additives designed to clean, seal, and protect your engine’s cooling system, radiator, and fuel tank. Ideal for vehicle maintenance, preventative repairs, and heavy-duty commercial use.
- Step 1: Thoro-Flush for Rust & Scale Removal: This formula is designed to clean rust, scale, sludge, and grease from your engine’s cooling system. Restores coolant flow, unplugs heater cores, and removes gelled Dex-Cool and sludge in a single flush, improving coolant efficiency and engine performance.
- Step 2: Ceramic Motor Seal for Durable Leak Prevention: Seals cracks, gasket leaks, and porous metal with a rock-hard ceramic coating. Trusted by performance enthusiasts for over 50 years to improve cooling performance by up to 10%. Provides a permanent seal that withstands extreme temperatures, perfect for head gasket leaks, intake gaskets, and cooling system cracks.
- Step 3: All Weather Seal for Instant Leak Fix: No-plug formula blends seamlessly with your antifreeze to stop leaks in radiators, head gaskets, and more. Works when your engine reaches operating temperature, forming a patch over leaks. Compatible with all coolants, including waterless antifreeze, and suitable for all engine types—cast iron, aluminum, plastic, and more.
- Premium Leak Protection for Every Engine Type: Ideal for use in automotive, commercial vehicles, and heavy-duty engines. Compatible with all antifreezes and metal surfaces. Provides a cost-effective solution to expensive engine repairs and helps prevent future breakdowns and coolant leaks.
- Easy to Use : Each bottle in this 3-pack treats up to a 6-gallon cooling system. Follow the easy-to-understand instructions on each product for straightforward application. Whether you are dealing with rust buildup, overheating, or coolant leaks, this 3-step process restores your engine’s cooling system to optimal performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00Y33I192 |
| Best Sellers Rank | #663,157 in Automotive ( See Top 100 in Automotive ) #84 in Cooling System Additives |
| Brand | IRONTITE |
| Customer Reviews | 3.8 3.8 out of 5 stars (129) |
| Date First Available | May 22, 2015 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4 pounds |
| Item model number | 9190-16 |
| Manufacturer | Irontite Products Inc. |
| Manufacturer Part Number | 468-9190-16 |
| Product Dimensions | 8.65 x 9.13 x 3.13 inches |

## Images

![Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More - Image 1](https://m.media-amazon.com/images/I/818WNGr5NbL.jpg)
![Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More - Image 2](https://m.media-amazon.com/images/I/81myY6peszL.jpg)
![Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More - Image 3](https://m.media-amazon.com/images/I/81hSngAlUeL.jpg)
![Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More - Image 4](https://m.media-amazon.com/images/I/81Rrn3CbJiL.jpg)
![Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More - Image 5](https://m.media-amazon.com/images/I/814adsupFML.jpg)

## Questions & Answers

**Q: Is this a 3 step process or can we skip the ceramic sealer? Thanks.**
A: It is meant to be a 3-step process, however, depending on your circumstances it could be beneficial to skip any one or more of these products. Certain types of leaks make using Ceramic Motor Seal dangerous to your engine. (coolant leaks that go to oil for example.) In such a case using All Weather Seal and not using Ceramic Seal would be advised. The Thoro-Flush is only if your system is in need of flushing to start with as clean of a system as possible, but in some cases may not be necessary.

**Q: Should the thermostat be removed during flush and or ceramic seal procedure?**
A: We recommend leaving the thermostat in during treatment because it will cause pressure to build which will aid and benefit the sealing or cleaning process. In addition to building pressure in the cooling system, peak performance is obtained with Irontite Coolant Additives, including ThoroFlush, when the engine is at normal operating temperatures, controlled by the thermostat opening/closing.

**Q: What color is the red bottle, ceramic sealer liquid inside? Iooks different than last time I got some.  Thank you**
A: Gray in color

**Q: What color is the liquid inside it? Iooks different than last time I got some.  Thank you**
A: It's a dark grey for Ceramic Motor Seal and more Black'ish for All Weather Seal and Thoro-Flush is a light Green. These colors will vary in intensity from mix to mix as we add the color in and since it's not a critical component of the mix it can vary a bit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked 99pct!!!
*by I***T on December 15, 2024*

I did the whole 3 stage process on a 2004 Subaru XS (EJ25 single cam, non turbo), which was consuming a gallon of water per 100 miles on the interstate at 70mph, far less miles in town. Left the coolant system with the thermostat removed for 2 days for the second step to "cure" because I had the time. It currently consumes less than a few oz in the same period. A very effective bandaid staving off a head gasket for now. The coolant system capacity meant I only used 1/3 the bottles for the treatment, as directed. Highly recommended!!!

### ⭐⭐⭐⭐⭐ Excelent products and fast delivery
*by A***R on December 28, 2018*

I have used these products for many years and they work better than any others I have found so far. The only caution is with the block cleaner... it cleans the whole system if you have an older vehicle use with caution because it may clean out some sludge in the cooling system and you may find a few leaks in your radiator or heater core in older vehicles that don't get regular maintenance. don't get me wrong these are very good products just don't leave the cleaner in too long in older vehicles. These do exactly what they are supposed to and no less..

### ⭐ No help
*by L***. on February 15, 2026*

bought to seal a slow drip soft plug..followed instructions to a T..didn't work

## Frequently Bought Together

- Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More
- Irontite All Weather Seal, Blue, 16 oz
- Irontite Thoro-Flush Coolant System Cleaner - Removes Rust, Scale, Oil, Sludge & Gelled Dex-Cool - 16oz Powder - Cleans Cooling Systems, Restores Coolant Flow, Safe for Cast Iron, Aluminum & Plastic

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-02-24*