Skip the auto shop - Our mechanics make house calls

Q: There is no visible leak in radiator. But daily I have to pour 100ml coolant in radiator. Gasket also recently changed...

asked by on

My car radiator drinks coolant daily. But there is no leaks in radiator and in hoses. Even I have changed my Head gasket recently. Can u pls give me tips. What is the problem?

My car has 180000 miles.
My car has an automatic transmission.

If you have to keep adding coolant daily and there are no external leaks, the only place for the coolant to go is in the engine. Check the oil to see if the oil is getting milky (looking like chocolate milk) indicating water is in the oil. If that is okay then the only other place is for the coolant to go into the combustion chamber. You stated you changed the head gasket. If your engine has overheated before and the head gasket blew, then you may have also cracked the cylinder head. Most of the time the head will crack between the valves in a coolant jacket, and if you did not have the head pressure tested, this may be the problem now. You can have the cooling system pressure tested and see if coolant gets into one of the engine cylinders. This is done by removing all the spark plugs and pressure testing until it loses pressure, then cranking the engine. Coolant will blow out of the cylinder that has a crack. If this is the problem then a replacement head will be needed.

I suggest you have this issue inspected by a qualified mechanic. A certified mobile mechanic from YourMechanic can visit your home or office to inspect your vehicle’s coolant issues.

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
  • Home
  • Questions
  • There is no visible leak in radiator. But daily I have to pour 100ml coolant in radiator. Gasket also recently changed...

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: What exhaust would work on my 2017 Mitsubishi Lancer and make it sound much louder and meaner

Hello. There are a lot of options out there so it is important that you listen to the sounds of the exhaust systems on cars online. Most manufacturers post videos of their exhaust systems on multiple vehicles to give you...

Q: When I turn my car slightly to the left, I hear a humming noise almost like a rubbing noise. The steering wheel doesnt vibrate

The noise could be from the wheel bearing rubbing as it may have dry grease inside the bearing. The noise also could be the power steering pump as there is a load applied to the pump more than steering the...

Q: Car dies

Hello, and thank you for writing in. Typically when this happens there is an issue with the air or fuel supply to the engine. You can scan the vehcile for diagnostic codes if you are able to without much trouble,...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...