A coolant flush is an essential part of car maintenance that helps keep your engine running smoothly and prevents overheating. But what exactly is a coolant flush, and why is it important? In this article, we’ll break down everything you need to know about coolant flushes, how they work, and when your car might need one.
What Is a Coolant Flush?
A coolant flush, also known as a radiator flush, is the process of draining old coolant from your car’s cooling system and replacing it with fresh coolant. Over time, coolant (also called antifreeze) can break down, becoming contaminated with dirt, rust, and other debris that can clog the system and reduce its effectiveness.
During a coolant flush, a professional mechanic:
- Draining the old coolant from the radiator and cooling system.
- Flushes the system with a cleaning solution to remove debris and deposits.
- Refills the system with fresh coolant that matches your vehicle’s specifications.
This process helps to maintain engine temperature regulation and protects against corrosion, preventing costly damage to your radiator, water pump, and engine components.
Why Is a Coolant Flush Important?
- Prevents Overheating – Coolant helps regulate your engine temperature. If old coolant becomes ineffective, your engine could overheat, leading to potential breakdowns and expensive repairs.
- Removes Rust & Contaminants – Removes Rust & Contaminants – A cooling system flush clears out rust, scale deposits, and debris that could clog the system.
- Protects the Radiator & Water Pump – Clean coolant prevents corrosion inside the radiator and water pump, extending their lifespan.
- Ensures Proper Heating & Cooling – Coolant isn’t just for keeping your engine cool—it also plays a role in your car’s heater. Old coolant can lead to poor heating performance in colder months.
- Extends Engine Life – A well-maintained cooling system keeps your engine running at the optimal temperature, reducing wear and tear over time.
Signs Your Car Needs a Coolant Flush
Not sure if your car needs a coolant flush? Here are some common warning signs:
- Engine Overheating – If your temperature gauge is running high, it could be due to old or low coolant.
- Dirty or Discoloured Coolant – Fresh coolant is usually bright green, orange, pink, or yellow. If yours looks brown, murky, or rusty, it’s time for a flush.
- Coolant Leaks – Puddles of coolant under your car indicate a leak that needs attention.
- Poor Heater Performance – If your car’s heater isn’t working well, degraded coolant could be the issue.
- Unusual Smells – A sweet, syrup-like smell inside your car could mean coolant is leaking.
How Often Should You Get a Coolant Flush?
The recommended frequency for a coolant flush varies by vehicle. Generally, it’s a good idea to flush your coolant every 2 to 5 years or every 50,000 to 100,000 km, depending on your car’s manufacturer guidelines.
If you’re unsure, check your owner’s manual or ask a trusted mechanic during your logbook service.
Need a Coolant Flush on the Gold Coast?
At Ashmore RWC & Automotive Services, we provide professional coolant flushes to keep your engine running at its best. Our expert mechanics will inspect your cooling system, flush out contaminants, and replace your coolant with the right type for your car.
Book your coolant flush today! Prevent overheating and costly repairs with expert cooling system maintenance.
