Skip the auto shop - Our mechanics make house calls

Q: Head gaskets particularly problematic

asked by on

I heard just before buying my 2007 Subaru Outback that boxer motors have an issue with head gaskets leaking and needing to be replaced. I still wanted it though, and at 70,000 miles I had both head gaskets start leaking. This is an expensive repair. Is there any way to extend the life of the newly replaced head gaskets?

A: Regularly scheduled preventative maintenanc...

Regularly scheduled preventative maintenance is generally the best way to stay ahead of head gasket problems. Old and corroding engine coolant can buildup in the coolant passages of the engine (due to electrolysis), this can cause the head bolts to erode and can also block the thermostat. Old coolant can also lead to overheating, which is the number one cause of head gasket failures. In general, coolant should be replaced every 45,000 miles or 5 years, whichever comes first. A local mechanic (like those at YourMechanic) can also perform a coolant test with a refractometer a your home or office. A refractometer test shows the protection level and dilution of the coolant.

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: Water leaking out of car

Hello. This issue is a common problem that owners of your particular vehicle may encounter. The water leakage is usually the result from aged door trim weather stripping. Overtime the weather stripping will lose its sealing capability due to it...

Q: Car losing oil, excessive transfer case fluid

Hello. These two systems are separate so they would not be related. If the transfer case is overfilled then it was either filled too high when it was last serviced or water got into it if you have driven through...

Q: How many miles per gallon does my car get?

Hi there, thanks for writing in. Maximum fuel economy is typically in the 45-65 MPH range. Above 65 MPH, fuel economy falls off dramatically due to wind resistance. Below 45 MPH, engine gearing is not conducive to maximum efficiency but...

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...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control 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...