You’re about to open your car door when you notice some kind of liquid underneath the body. Assuming it’s not rainwater or runoff, you’ve got to face the unhappy fact that your car is leaking. With all the different fluids in your car, how do you know whether the problem is major or minor? The color of the liquid may be able to give you a hint.
If the fluid underneath your car is clear, it’s likely to be water – especially if you’ve been running the air conditioner. Condensation tends to build up in your car’s cooling system as it pulls moisture out of the warm air. This water is then released through a small hose underneath your car’s body. It’s especially to common to see drips and small puddles of water on hot days.
Brown fluid often indicates an oil leak. Depending on how old and how dirty your oil is, it may be a lighter amber color or a dark blackish-brown. If you think your car is leaking oil, don’t delay; take it to your local mechanic. Lack of lubrication can cause all kinds of damage to your car’s engine.
Green, yellow, blue or even pink liquid is likely coolant. (Manufacturers use brightly-colored dye so it’s easy to distinguish from other fluids.) Coolant sometimes can give off a sweet smell, especially on warmer days. While you can add coolant to your car in the meantime, you’ll want to make sure you address the underlying cause of the leak by having your mechanic check it out.
Reddish fluid under your car, particularly strong-smelling fluid, may be fluid from your transmission. If the fluid hasn’t been changed in a while, it may look reddish-brown. Fluid could be leaking from the transmission itself or it could be a problem with the hoses that run to the radiator or cooler. A second possibility: red fluid could signal a leak from your car’s power steering system. Power steering fluid tends to collect underneath the steering column of your car’s wheel. That means you’re likely to find it under the front left side of the car. No matter what the source, this is another leak to have checked immediately..
A brake leak is a cause for major concern. Brake fluid is a brownish color and is slick and slippery to the touch. You’ll most likely see it near the tires, since that’s where the brakes are located. Don’t drive your car if you think there may be a brake leak; it’s simply not safe.
While you may be able to identify some of the fluids that could leak from your car, it’s always best to consult a professional. If you have any worries about whether your car can be driven, best to get a tow to your local mechanic.