Skip the auto shop - Our mechanics make house calls

Q: Oil mixing in with coolant, No overheating. Car performs fine.

asked by on

Oil is leaking and mixing in with the coolant in the reservoir. No warning lights are on, no overheating, and the car performs fine.

If you are seeing oil in the water it could indicate a blown head gasket and should be looked at by a technician. I would not drive the car until you fix the problem because a blown head gasket could allow water into the motor and cause a number of problems. None which are good or end with the motor running again.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 2006 Volkswagen Passat 2.0t won't start and has a light on dash board that says parking brake fault

The parking brake fault on this model is typically traced to the switch or a failed mechanism in the caliper due to corrosion. There is a code reader that a mechanic can apply to read any stored parking brake fault...

Q: 2013 BMW 528i Maintenance Costs

This is a great car that performs well and runs very efficiently. As to the average annual maintenance costs per year, this may be tough to say as everyone's driving habits are different which require different maintenance intervals. As for...

Q: Losing engine oil fast

Hello there, many different faults will cause your 2009 Toyota Yaris to leak oil. From your description of the leak it sounds like the most likely is the PCV valve. When the PCV valve fails it can cause the pressure...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...