Skip the auto shop - Our mechanics make house calls

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

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.

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.

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!
  • Home
  • Questions
  • 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

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: Passenger Windows and power seat won't work what could the problem be

Start with checking the fuses under the hood (MBEC 40 or 60amp) first to see if they are burnt. Also, check the wires under the driver seat from the back seat. There is a wiring junction clip with some fairly...

Q: The turning radius on my steering wheel is broken from lack of steering fluid. What needs to be fixed and how much will it cost?

This suggests your power steering pump may be failing or you have a leak elsewhere in one of the power steering lines. The [power steering]((https://www.yourmechanic.com/services/power-steering-fluid-is-leaking-inspection) system operates on very high pressurized hydraulic pressure (in some cases as much as 300...

Q: Water from the radiator is going to the expansion tank which then overflows causing engine to overheat.

Hi there. There could be three things that could be causing your engine to overheat and the heater to not work. (1) The thermostat could be stuck shut or causing the cooling system to not flow making the engine...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.