Q: Issues with coolant, afraid of blown head gasket.

asked by on

I noticed the coolant reservoir was bubbling profusely after driving from work, and it appears to drop well below the low marker to almost completely empty on a daily basis. after adding more green coolant to it cold a few days in a row the check engine light came on. I've ceased driving the truck. I cannot see anywhere that it may be leaking. Any thoughts appreciated.

My car has 154000 miles.
My car has an automatic transmission.

If the coolant is not leaking externally then it is leaking internally into the engine cylinder. I suggest looking inside the oil cap or on dipstick to see if the oil is contaminated with coolant. The oil would look milky like chocolate milk if so. The cooling system should be pressure tested to see if it holds pressure and to pinpoint where the leak is.

If you’re unable to find the leak, get some help from a certified technician, like one from YourMechanic, to find the source of the coolant leak and suggest an accurate repair from there. Best of luck.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Issues with coolant, afraid of blown head gasket.

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: Car overheating even after changing thermostat

Hello. It is possible that the radiator needs to be replaced. Sometimes, flushing out the radiator will solve a problem like this, but when it doesn’t, replacing the radiator is necessary. It may also be possible that your car...

Q: Can a power steering leak make a car jerk?

If the fluid level is low, or there are other faults such as a loose power steering pump drive belt, you might experience that effect, that is jerking and/or lack of smoothness in the steering feedback that you feel when...

Q: What could be causing the serious vibrations in the steering column and front end when the truck exceeds 35 mph?

Hello, thank you for writing in. The most common issues with vibrations at higher speeds are related to the tires or suspension. The first place to start is having the tires inspected. Make sure the tread is deep enough, the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...