Skip the auto shop - Our mechanics make house calls

Q: can i switch between syn-blend oil & regular oil when i change it ?

asked by on

as above ^

My car has 95000 miles.
My car has an automatic transmission.

A: According to Pennzoil, synthetic (including...

According to Pennzoil, synthetic (including blends) and regular oil are completely interchangeable and thus there is no restriction on "switching" back and forth at any time. The main thing of concern with engine oils is that you are using the right viscosity and an oil that has the approved API certification for your vehicle. Fully synthetic oils are preferred of course and have better characteristics all around.

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: Should I change my oil before going on a long road trip?

Considering that you have 42,225 miles on the vehicle now and you had the engine oil changed at 33,000 miles, that is over 9,000 miles since the last oil change. There is no oil that can last up to 10,000...

Q: How do I check the brake fluid?

At least once a year, you should check your brake fluid. Without a proper amount of brake fluid, your brake system cannot work. Checking your brake fluid level only takes a few seconds: 1. Raise the hood. 2. Locate the...

Q: How to use old oil

It's hard to say. Oil is pretty mixable and it stays in the solution pretty well. Gasoline settles down but oil really doesn't. If he has gallons of that stuff, and if you've got lawn mowers, you can try and...

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...
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...
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...