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Caring for Cooling Systems

The 22 Million Car Question: Why Your Aging Engine Needs Irontite NOW

By Lyn Borchert
December 5, 2025

When a car reaches 10, 15, or even 20 years old, it crosses a threshold where simple maintenance isn't enough anymore. Older cars and light trucks require **more aftermarket products and services per mile** than newer models. Here's why this matters specifically for your cooling system:

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How to Perform a Heater Core Flush Like a Professional Mechanic

By Lyn Borchert
October 15, 2019

One way to ensure a healthy vehicle is by performing a routine heater core flush. If you don’t know what that is, then keep reading.

Radiator Flush Comparison Guide: How to Choose a Radiator Flush

By Lyn Borchert
June 6, 2019

Read this beginners guide to learn how to choose the best radiator flush for your car. Find out which product is the best for your car. Read more here.

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Don’t Forget to Flush! A Step by Step Guide to a Car Coolant Flush

By Lyn Borchert
March 30, 2019

A healthy coolant system is so important for your car’s engine performance. Don’t forget to flush! Here’s a step by step guide to a car coolant flush.

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6 Problems You’re Likely to Experience with Your Engine Coolant System

By Lyn Borchert
March 12, 2019

Proper car maintenance involves understanding all the possible car problems. Here are engine coolant system problems your car might have at some point.

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Understanding the Different Antifreeze Types for Your Car

By Lyn Borchert
March 11, 2019

Are you looking for the right engine coolant for your car? Keep on reading this post to know the different antifreeze types and how they’re made.

Seal It and Forget It: How to Identify a Coolant Leak in Your Car and Seal It Like a Pro

By Lyn Borchert
March 7, 2019

Your car’s radiator keeps the engine purring at the right temperature. But a coolant leak is a problem. Here’s how to identify a leak and seal it like a pro.

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The Best Radiator Stop Leak

By Lyn Borchert
February 14, 2019

Radiator Stop Leak products and their like have been around ever since there have been radiators. We've all heard the stories of how you can use Black Pepper, or raw egg whites to seal a leak.

What is the Best Cooling System Sealer?

By Lyn Borchert
February 14, 2019

Unlike a typical radiator stop leak product, a cooling system sealer works to fully coat and seal your cooling system all over. This kind of technology has been around since the 50's or maybe even longer.

Plugged Heater Cores in 1985 – 2006 Ford Taurus and Mercury Sable

By Lyn Borchert
April 17, 2017

Designed with a bypass line around the heater core, which limited coolant flow through the heater core and regularly caused the heater core to plug. The #1 Symptom is no heat. Use Thoro-Flush to solve the problem.

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Plugged Heater Cores in Chrysler/Dodge/Jeep Products

By Rich Wengatz
April 9, 2017

All 2000 and forward Chrysler/Dodge/Jeep vehicles were manufactured with very tight heater cores.