Posted by: Mark Polk | 2013

Why Flush & Replace Automobile Antifreeze?



Today I want to talk briefly about flushing and replacing the automotive antifreeze in vehicle.

Most people are aware of the long term benefits of changing engine oil on a regular basis, but many are not aware of the benefits of changing the antifreeze in theirvehicle at recommended intervals.

The cooling system of any vehicle performs a very important job; to prevent the heat producing engine from overheating and quite possibly seizing up. When you don’t flush and replace the antifreeze periodically rust, scale and corrosion build-up in the radiator and engine coolant passages eventually resulting in an overheated engine.

Let’s talk a minute about what a vehicle coolant system is intended to do. First of all, if an engine did not have methods for transferring the heat that is produced through combustion and friction the hot metal parts would melt down and seize up.   Heat that the engine produces is basically removed through the exhaust system and through the cooling system. All heat producing sections of an internal combustion engine need to be cooled, including the combustion chamber, heads, cylinder walls and the engine block itself. The way this is done is by circulating coolant around these heat producing areas of the engine. The coolant picks the heat up and releases much of it as it circulates through the vehicles radiator.

Water does a good job helping to cool an engine but it has some drawbacks. Most importantly it freezes quickly during cold winter temperatures. Water can also cause certain metals to rust and corrode over time. This is why the water in a vehicle cooling system is mixed with what we refer to as antifreeze.

Here are my top 7 reasons for flushing and replacing your antifreeze at recommended intervals:

1)      New antifreeze provides maximum protection against freezing.

2)      Flushing the cooling system helps remove old scale and rust, and the corrosion inhibitors in new antifreeze help prevent scale and rust build-up in the cooling system.

3)      New antifreeze helps keep the engine operating at its most efficient temperature regardless of operating conditions and outside temperatures.

4)      When you don’t flush and replace the antifreeze at recommended intervals chemicals start to break down and cannot perform the job as effectively as new antifreeze can. Just like used engine oil breaks down and needs to be replaced for maximum lubrication and cooling performance.

5)      Often times the cause of a cooling system component failure can be contributed to not flushing and replacing the antifreeze. Rust and scale build-up can lead to a radiator hose, water pump or thermostat failing and leaving you broke down alongside the road.

6)      If the coolant system hasn’t been flushed and the antifreeze replaced for several years beyond the recommended interval it can result in an overheated engine. I have seen coolant passages in vehicle engines completely blocked due to not flushing and replacing antifreeze at recommended intervals.

7)      Flushing and replacing antifreeze adds to the longevity of the engine and engine components.

The bottom line is periodic inspections of your vehicle coolant system components, and flushing and replacing antifreeze at recommended intervals will add years of life to the vehicle’s engine and prevent untimely breakdowns.

Keep in mind that glycol antifreeze is poisonous to humans and pets and that it needs to be disposed of properly. You should follow the guidelines in your vehicle owner’s manual for flushing and replacing antifreeze and make sure you are using the proper type of antifreeze recommended for your particular vehicle.

Mark Polk

Follow us on FACEBOOK



%d bloggers like this: