Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-103658-1pwq0k6js:136:3912)
    at m.mountComponent (/tmp/execjs20161208-103658-1pwq0k6js:47:15602)
    at /tmp/execjs20161208-103658-1pwq0k6js:49:31860
    at a.r.perform (/tmp/execjs20161208-103658-1pwq0k6js:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-103658-1pwq0k6js:49:31821)
    at r (/tmp/execjs20161208-103658-1pwq0k6js:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-103658-1pwq0k6js:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-103658-1pwq0k6js:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-103658-1pwq0k6js:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-103658-1pwq0k6js:173:8

Q: Head gaskets failed how likely is it to happen again?

asked by on

I have a 2006 Subaru Forester that has pretty low miles (64,000) for how old it is. I just had a head gasket failure that came out to be a pretty pricey repair. What can I do to prevent this from happening again? I am very gentle with this car, it’s my ‘reliable’ daily driver. Did the head gasket just get old?

A: Hello! Thank you for writing in with this q...

Hello! Thank you for writing in with this question. The design of the “boxer” engine makes for a high probability of head gasket problems. Coolant and oil drainage isn’t like typical “V” or inline style engines, so coolant and oil can pool in the cylinder heads. Over time, old coolant can cause corrosion in the cooling passages due to a process called “electrolysis,” which can lead to overheating. Overheating is the number one cause checked at every oil change with a refractometer, and changed every 5 years or 45,000 miles. A professional mechanic at YourMechanic can perform a coolant test at regular intervals. New style head gaskets are generally made of a strong multi-layer-steel (MLS). Unlike old style single layer steel gaskets, these MLS gaskets withstand temperature and pressure fluctuations better. The gaskets in your vehicle didn’t “get old;” more than likely the cause of the gaskets was something related to engine design or coolant quality.

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・Save up to 30%

Get a quote

What others are asking

Q: Car cranks strong but will not start - 2000 Subaru Outback

Hi there. It sounds like you've certainly done some good checks. However, what was the fuel pressure? Each manufacturer has a specified fuel pressure required for the engine to run. There can definitely be plenty of fuel coming out of...

Q: My 1999 Toyota Camry won't start what might it be?

From what you've described, you most likely blew a head gasket. All the coolant is now in the engine causing it to lock up. Open up the oil cap and check the oil dip stick to see if oil is...

Q: Compass broke, a pain for being out in the mountains

Hello James! Thank you for writing in about this problem. The compass failure could be related to the wiring that runs to the mirror/compass. It could also be that the compass was inadvertently turned off (the right-side button on the...

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...
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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...