Skip the auto shop - Our mechanics make house calls

Q: Car overheated after replacing radiator

asked by on

My car overheated shortly after having the radiator replaced. I was told I needed a head gasket because there was condensation on dipstick and oil had milky antifreeze in it.

A: Hello. If there is condensation on the dips...

Hello. If there is condensation on the dipstick, or if the oil appears milky, then there is definitely an internal engine problem. It can be from a crack in the engine or a blown head gasket. It would be hard to say if the problem occurred before the radiator was replaced or if it was from a faulty radiator replacement. To verify that there is a problem, a mechanic would typically do a block test to determine if there is exhaust in the cooling system which indicates a head gasket problem or a crack. At that time it would be determined if it is better to repair the head gaskets or replace the engine assembly. I would get some help from a certified mechanic that can do this test and determine the cause of your car’s overheating problem.

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: Check engine light and P1345 code

I'm thinking that they may have sold you a V6 distributor. Remove the rotor and look at the top of the vane cup for a "6" or an "8". It there is a 6, it's a V6 distributor and won't...

Q: can overfilling the oil in a car cause oil on the spark plugs?

The most common reason that you have oil on the spark plugs after you remove the coils is the valve gasket is leaking oil into spark plug wells. You will need to clean out the oil before replacing the spark...

Q: Motor stalls when I shift to drive or reverse

This may be a result of a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...