Is it Safe to Drive With a Radiator Leak?

The radiator helps to keep your engine cool. If your radiator is leaking, coolant will be lost and the engine will have the potential to overheat. The coolant removes heat from the engine by transferring the heat through a series of coils. The cooled air flows back into the engine to prevent it from overheating. You should not be driving the vehicle anywhere, and should have a mobile mechanic, such as one from YourMechanic, inspect and potentially replace your radiator, as the car will be prone to overheating.

If you believe you have a leaking radiator, here are some things to consider:

  • Coolant tends to be green, pink, or orange in color. If you see any of these fluids on the garage floor underneath of your vehicle, you may have a radiator leak. In addition, a sweet smell accompanies the coolant. If you notice these two things, contact a mechanic as soon as possible to have your vehicle inspected for a coolant/radiator leak.

  • If the coolant level drops too much because of a radiator leak, a low coolant light will come on. In addition to the low coolant light, if you have a rising temperature gauge, this can also mean a radiator leak. These two signs combined can signify your vehicle may overheat very soon.

  • If your vehicle constantly overheats, this is another sign that your car may have a radiator leak. When you notice your vehicle overheating, turn on the heater as high as it can go to transfer some load off of the engine. If your temperature gauge does not go down, pull over to the side of the road immediately. Open the hood of the vehicle, but do not open the radiator cap, as this is extremely dangerous. Opening the radiator cap can cause hot liquid to spray in your face, causing burn injuries that are potentially fatal. Contact a mechanic right away to have your car's overheating problem inspected.

  • Radiator leaks can be repaired by a professional mechanic. Depending on the severity of the leak, the area can be sealed or the entire radiator may need to be replaced. Do not drive far with a radiator leak as it can cause further damage to your engine, which can mean a more extensive repair.

Driving with a radiator leak is a dangerous operation, as it will very likely cause your engine to overheat. If you are driving down the road and notice your engine is overheating, pull over immediately and let the vehicle cool down. A radiator leak can be a very serious issue and you should look to have this taken care of by a certified mechanic as soon as possible.


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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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