Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-85577-9kebzijs:136:3912)
    at m.mountComponent (/tmp/execjs20161208-85577-9kebzijs:47:15602)
    at /tmp/execjs20161208-85577-9kebzijs:49:31860
    at a.r.perform (/tmp/execjs20161208-85577-9kebzijs:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-85577-9kebzijs:49:31821)
    at r (/tmp/execjs20161208-85577-9kebzijs:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-85577-9kebzijs:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-85577-9kebzijs:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-85577-9kebzijs:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-85577-9kebzijs:173:8

Q: I had an oil change and Castrol GTX was used, which I assume is not a synthetic oil. Will that harm my engine.

asked by on

will regular engine oil used for an oil change harm the Subaru 2013 legacy 2.5 which has before this always had synthetic oil

My car has 25000 miles.
My car has an automatic transmission.

A: Synthetic vs conventional oil is one of the...

Synthetic vs conventional oil is one of the most debated myths surrounding the topic of oil changes. This will not hurt your engine when switching from synthetic to conventional or vice versa. In fact, Synthetic blend oils are actually a mix of conventional oils and synthetic oils. It is recommended that you use the same oil to top off when needed, giving you the best protection from the oil you have chosen to use in your vehicle. Many people often wonder about the benefits of using synthetic oils.

Many synthetic oils are made up of a base oil of approximately 80%, with other additives making up the remaining 20%. The main difference between the molecules in synthetically engineered oils are the uniformity of the molecules, while the molecules found in most conventional oils differ in shape, size and impurity. The type of oil that should be used for a specific application depends largely on the driver's driving habits, the environment in which the car is driven, the mileage on the car's engine and the limits that the engine may be pushed to. I would recommend having an expert from YourMechanic come to your home to perform an oil change service on your car to determine the best option for your vehicle in the future.

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: Alarm for oil change keeps going off - 2009 Dodge Sprinter 3500

Hold the trip reset for ten seconds to clear it. This should clear it. Otherwise, try holding the trip reset and turn on the key and hold it until the oil indicator goes out. If the problem is not going...

Q: Shifting issues, grinding noise. 2013 Scion FR-S

Hello. One option would be to adjust your clutch pedal or have it adjusted by a professional. It is also possible that there is a problem with the clutch slave cylinder. When this part is faulty it will cause a...

Q: Rattling Sound - 2007 Subaru Impreza

Hey there. I suspect you have an engine-mounted bracket that is touching a heat-shield or other metal component under the hood, generating the noise you hear. Get a helper to hold the brake, and put the car in gear while...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...