What to Do When Your Car is Leaking

If you notice your car leaking, it’s important to promptly identify the type of liquid and address the issue. Different car fluids have distinct colors, each indicating a specific problem. Here’s a guide to help you determine what might be leaking based on the color of the liquid and what actions to take.

Identifying the Type of Fluid by Color

1. Red Fluid Leaking from Car
   • Possible Causes: Red fluid often indicates a leak from the transmission or power steering system. Both fluids are typically red to distinguish them from other automotive fluids.
   • What to Do: If you notice red fluid under your car, check the transmission fluid level. Low levels can cause transmission issues and damage. If the power steering fluid is low, it can affect steering performance. A professional must inspect and repair the leak in both cases to avoid more serious damage.
2. Green Liquid Car Leak
   • Possible Causes: Green liquid is commonly antifreeze or coolant, which helps regulate your engine’s temperature. A green leak usually means there’s a problem with your radiator, water pump, or hose.
   • What to Do: If your car is leaking green liquid, avoid driving it as overheating could cause significant engine damage. Check your coolant levels and have the cooling system inspected as soon as possible.
3. Brown or Dark Fluid
   • Possible Causes: Dark or brown fluid usually indicates an oil leak. Engine oil can range from light brown to dark black depending on its age. A brake fluid leak can also be brown and is often oily to the touch.
   • What to Do: If engine oil is leaking, check the oil level to prevent engine damage. If you notice it’s brake fluid, have your car repaired before driving, as low brake fluid can cause brake failure. Both situations require immediate attention and car maintenance to ensure the safety of your vehicle.
4. Clear or Slightly Yellow Fluid
   • Possible Causes: Clear fluid often indicates a water leak, which could be from the air conditioning system (condensation) and is generally harmless. If it’s slightly yellow, it might be brake fluid.
   • What to Do: If it’s water, there’s usually no need for concern, as this is a common occurrence from air conditioners. However, if the liquid appears to be brake fluid, avoid driving and have it repaired immediately.
5. Blue Liquid
   • Possible Causes: Blue liquid usually indicates windshield washer fluid. While it’s not as critical as other fluids, a leak could still cause issues, especially in cold weather when you need to maintain visibility.
   • What to Do: Refill the windshield washer fluid reservoir and seal any cracks or leaks.

When to Seek Professional Help

If you’re unsure about the type of fluid leaking from your car, or if the leak seems serious, it’s best to consult a professional mechanic. Ignoring a leakage can lead to more significant problems, including costly repairs or safety hazards.

At Hawk Nissan of St. Charles, our skilled technicians can quickly diagnose and repair any fluid leaks, ensuring your vehicle stays in optimal condition. From transmission fluid leaks to oil spilling from the engine, we can diagnose and fix the issue in a flash. Contact us today to schedule a service appointment and keep your car running smoothly.