Posted under Car Fluids

It’s commonly known by three names: coolant, antifreeze, and radiator fluid. But whatever you call it, you want it flowing through your vehicle, not pooling under it. Yet many drivers know the sinking feeling that comes with noticing a bright-colored fluid on the garage floor or an odd, sweet smell after shutting off the engine. 

Because it’s a common problem, you may wonder if a car leaking radiator fluid demands prompt attention. Yes, it does! If left unattended, a radiator fluid leak can lead to more significant, more costly problems like engine damage.


Common Symptoms of a Radiator Fluid Leak

By recognizing these common symptoms of a radiator fluid leak early, you can address problems before they turn into serious engine damage.

Fluid Under Your Car
Here are three ways to tell if the puddles or drips you see on the garage floor are from radiator fluid.

  • Color: In the past, radiator fluid was uniformly green. Today, the color is determined by the formulation. Radiator fluid with Organic Additive Technology (OAT) can be orange, yellow, red, pink, or purple. Radiator fluid with Inorganic Acid Technology (IAT) is typically still green.
  • Consistency: Radiator fluid is watery and slippery to the touch.
  • Scent: Radiator fluid is the only automotive fluid with a sweet smell.

Blown Radiator Hose
Radiator hoses are designed to handle high pressure and heat, but they can wear out over time. If a hose blows, you might see steam billowing from under your hood and notice your fluid level dropping fast. Addressing a blown hose quickly is imperative to keep your engine from overheating. It’s a simple fix, so don’t delay!

Defective Hose Clamp
Hose clamps are small but mighty components that keep your radiator hoses securely in place. If a hose clamp is loose or defective, it can cause a radiator fluid leak. You might notice radiator fluid dripping from where the hoses connect. If that’s the case, tightening or replacing the clamp could solve the problem. It’s a quick and easy fix that can prevent bigger issues.

Warped Head Gasket
The head gasket seals the engine block and cylinder head, preventing fluid from leaking into and out of the engine. If it becomes warped or damaged, radiator fluid can escape, leading to overheating and potential engine damage. Signs of a leaking head gasket include white smoke from the exhaust, milky oil, and your engine running hot. If you notice any of these issues, visit a professional mechanic immediately to avoid costly repairs.

Foreign Object Penetrating the Radiator
Sometimes, a foreign object like a rock or road debris can damage your radiator, causing a radiator fluid leak. If you suspect this, you might see a small puncture or dent in the radiator. If that’s the case, your vehicle might lose a lot of radiator fluid and lead to an overheated engine, so make sure to get your radiator repaired immediately.


Need Help? Visit Your Local Jiffy Lube

Don't wait until a small leak turns into a major problem. Visit your local Jiffy Lube®, where trained technicians know how to find a radiator fluid leak through:

  • A thorough visual inspection of the car’s cooling system
  • Pressure testing with specialized equipment
  • Dyes and black lights (where available)

The friendly, knowledgeable staff will help ensure your car gets the care it needs so you can drive with peace of mind. Stop by today and let us help keep your car in the best shape possible!

NOTE: Not all services are offered at all Jiffy Lube service centers. Please call ahead or check jiffylube.com to ensure the service is available at the Jiffy Lube location near you.