How Often Do I Need to Top Off My Coolant?

"Coolant" is a term used to refer to radiator fluid. The purpose of coolant is to circulate through the engine compartment of a vehicle to dispel some of the heat that’s manufactured through the combustion process. It flows through tubes or hoses into the radiator.

What does the radiator do?

A radiator is the cooling system in a vehicle. It is designed to transfer heat from the hot coolant that flows through it to the air blown through it by the fan. Radiators operate by pushing hot water from the engine block through hoses that allow the heat from the water coolant to dispel. Once the liquid is cooled down, it is returned to the engine block to absorb more heat.

The radiator is usually mounted in the front of a vehicle, behind the grill, which allows it to take advantage of the air intake that happens as the vehicle is being driven.

How often should I top off my coolant?

Anytime coolant loss happens, it is important to replace the coolant as soon as possible. If the radiator does not have enough coolant, it may not be cooling the engine down properly, and engine damage could result from overheating. Coolant loss is often first noticed when the vehicle’s thermometer registers a hotter than average reading. Typically, coolant loss is caused by a leak. A leak can be either internal, such as a leaky gasket, or external, such as a hose failure or crack in the radiator. An external leak is usually determined by a puddle of coolant underneath the vehicle. Coolant loss can also be caused by a leaky or improperly sealed radiator cap allowing the super-heated coolant to evaporate.

Failure to top off the coolant could result in catastrophic damage to a vehicle. If you’re noticing that you have to keep refilling the coolant, it’s important to have a licensed mechanic inspect the cooling system to figure out why the coolant loss keeps occurring.


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Rodney

37 years of experience
611 reviews
Rodney
37 years of experience
Mini Cooper L4-1.6L Turbo - Coolant is leaking - Sacramento, California
Rodney quickly found out what was wrong. He knows a lot about our car. He is friendly and professional. I feel like he has our best interests in mind, we trust him.
Pontiac Sunfire - Coolant is leaking - Sacramento, California
Outstanding!! Extremely knowledgeable, and knew exactly what to look for I would recommend Rodney and "Your Mechanic" services!

Shane

18 years of experience
379 reviews
Shane
18 years of experience
GMC Canyon V6-3.6L - Coolant is leaking Inspection - Round Rock, Texas
Shane arrived early and provided photos showing what the issue was (water pump). He also gave me helpful information on what to do until I could get it replaced.
Ford F-150 - Coolant is leaking - Georgetown, Texas
Described to Shane what I thought the problem might be. He looked at the truck and found it wasn’t as dire as I thought. Thanks Shane.

Kevin

25 years of experience
29 reviews
Kevin
25 years of experience
Hyundai Elantra L4-1.8L - Coolant is leaking - Arlington, Texas
Kevin was absolutely wonderful! He explained everything in detail, diagnosed my issue quickly. Very informative, honest and great communicator! 5 stars aren’t enough, he was top notch!

Michael

28 years of experience
672 reviews
Michael
28 years of experience
Lincoln Aviator V8-4.6L - Coolant is leaking - Tempe, Arizona
Michael is amazing - Very knowledgable and is a straight shooter. This is already my 2nd time using him and will continue to reach out to him if I have any issues with any of my vehicles.

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