Q: every two days I'm constantly filling up my coolant resivior because it will get down to min level. car does not get hot temp gaug

asked by on October 13, 2016

Temperature gauge is fine.but when I check coolant resivoir its to a min level.I find myself topping off with 50/50 coolant every 2-3 days for 3 weeks. Oil looks good.no signs of blown head gasket. So what may you suggest?

My car has 185000 miles.
My car has an automatic transmission.

Coolant is leaking Inspection $79.99 - $89.99 Get a Quote

You are loosing coolant somewhere. I would have the cooling system pressure tested by a mechanic to see if the cooling system is leaking externally or internally. Once the pressure is put on the system then a leak check can determine where the fluid is going. Sometimes the heater core leaks and will not show up unless you pressurize the system and wait to see the leak. If the test does not show a leak on the outside anywhere but you still lose pressure then you may have a leaking head gasket. You will be able to see this when you pull all the spark plugs and turn over the engine to see which hole the coolant comes out of. Then have head removed and checked for a blown gasket and cracks in the head. If you need assistance, a certified YourMechanic technician can come to your location to perform a coolant leakage inspection to help you diagnose this issue.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

Intermittent starting problem.

Hi. There may be a couple of reasons why this could be happening. There could be an intermittent problem with the starter not engaging when it should be. This is usually caused by a problem inside the starter solenoid. ...

Air Filter noise and Check Engine Light

What you are describing sounds like a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...

Sporadic ticking sound from the front of the car

Hi and thanks for your question. It sounds like there could be a problem with a loose fan shroud or a loose body part to the vehicle. If the noise only occurs when driving straight and sometimes with braking, then...

Brake light comes on while driving uphill, especially with strong acceleration.

The warning light is activated by either low fluid level in the master cylinder or engagement of the E-brake. If the fluid level is not low and the E-brake is not engaged, there is a fault in the sensor or...

Car making a thumping sound/vibration as I'm driving

There are a number of things that may cause this kind of thumping sound that may be consistent with speeding up and slowing down, but it sounds like you may have a wheel bearing that might be failing. A wheel...

Blinker/turn signal does not flash, I can hear a click in the module, lights up but doesn't blink 2004 Chevrolet Express 2500

Hi there - I would check the turn signal light bulbs and ground connections on the side which is not flashing. Burned out bulbs, shorts and poor ground connections can cause the "no flash" behavior you describe. If the hazard...

my engine in my Nissan 350z is making a ratteling noise. The thing is the check engine light does not turn on. Then it goes away b

Hello, thank you for writing in. Tracking the rattling noise will have to start by observation. Take a good look at the engine while it runs and try to get a better idea of where exactly in the engine it...

Code P0505 will not reset

Code P0505 stands for Idle Air Control (IAC) Malfunction. Anything that affects the idle control system could be the cause. This could be anything from the IAC control circuit (PCM, wiring, etc.) to a mechanical problem such as a vacuum...

My radiator fan is shaking

There are a number of things that could be causing this kind of sound, such as bad idler/tensioner bearings, a loose cooling fan assembly. I would suggest having a professional from YourMechanic come to your location to take a look...

Related articles

2012 Nissan Sentra vs. 2012 Nissan Altima: Which One Should I Buy?
When you consider the Nissan Sentra versus the Nissan Altima, you need to realize that you’re crossing between two different classes of vehicle: the Altima is a mid-size sedan while the Sentra is a compact sedan. The differences between the...
The Best Used Cars to Buy If You’re a Massage Therapist
If If you're a massage therapist, one of the cornerstones of your business has to be that you don’t keep your clients waiting. That means you need a vehicle that’s reliable. You also will have to move your gear, including...
The Best Used Cars to Buy If You’re a Vet
The The best car for a vet to own largely depends on the type of practice he or she has. Large animal vets are probably going to want something that delivers a fair bit of power, and possibly even towing...