Skip the auto shop - Our mechanics make house calls

Q: Motor oil

asked by on

Will it hurt my engine if i put regular oil in it once it has had synthetic oil in it?Is there a difference in engines that require synthetic oil?

My car has 26581 miles.
My car has an automatic transmission.

A: Hi! Great question. It will not hurt an eng...

Hi! Great question. It will not hurt an engine to switch from synthetic to conventional petroleum oil or back again. They are totally compatible. Synthetic oils can excel at maintaining their viscosity rating at extreme temperatures and protection at longer intervals.

The two most important things about your engine oil are: use the correct SAE viscosity recommended by the engine manufacturer, and change the oil when recommended by the maintenance schedule or vehicle’s oil change reminder.

If you decide to get your oil and filter serviced, consider YourMechanic, as a certified technician can come to your home or office to do so.

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: Warning lights come on while driving

Hello. It is possible that the oil pump is faulty causing low oil pressure. This may prevent the engine from working properly. It is also possible that the head gasket has failed or an internal engine component has failed (burned...

Q: Vehicle stalls out after idles down when warm.

You may have 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 at idle. Since...

Q: How do I view the outside temperature

The information display can tell you the outside temperature, so that you know how hot or cold it is outside. To view the outside temperature, press the Sel/Reset button until the outside temperature is shown on the information display.

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.