Skip the auto shop - Our mechanics make house calls

Q: Put the wrong type of gas into my car

asked by on

I bought my car a few days ago, and I put regular 87-ethanol gas in it. But, I am supposed to use premium gas. Can I mix premium gas in until the regular is gone? How do I do that?

A: Modern cars such as yours are able to use t...

Modern cars such as yours are able to use the 87 octane gas even though they are meant for 91 octane. The ECU is able to detect that the vehicle is running on 87 octane gas and reduces engine timing. When the car runs 87 instead of 91 it will reduce engine power and fuel efficiency. Your car will drive fine with this mixture. You can just refill it with the correct fuel when you are running close to empty.

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: Car sat for years, trouble starting - 1971 Nissan 240Z

Hello. It sounds like the fuel pump is bad or the fuel filter is clogged. It is also possible that there is a lot of water in your fuel system. Dry gas or sea foam will need to be used...

Q: 2005 ford mustang GT wont fill up past the halfway mark

Hello. We will be happy to assist you. Anything built before 4/27/05 may develop problems with the fuel tank and a replacement is suggested. The issue with those tanks are that they won't fill up all the way because the...

Q: Should I replace my engine or buy a used car?

Considering that the price to replace your engine and the cost to purchase a new vehicle are in the same price range, I would choose the option that takes less time. This will remove this headache from your life sooner....

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...
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...