Skip the auto shop - Our mechanics make house calls

Q: Can I put E85 in my gas tank?

asked by on

Around my gas tank the truck says it accepts E85. When I bought the truck though the owner of the truck said only to put in E89 gasoline in to the engine. I believe he used some type of computer programmer to alter the computer to only use regular fuel and not E85. I do not have any type of computer programmer so im not sure what he did. Without possibly "switching it back." Is it possible that I can put in E85 in the truck yet? Or is it best to get a computer programmer to switch it back?

My car has 55000 miles.
My car has an automatic transmission.

If the previous owner specifically asked you not to, they may have known about an issues the vehicle has when using E85. It may be necessary to visit your local dealer to take a look at the truck to see if any modifications have been to the point where programming was done that altered how the vehicle burns fuel. Be very careful changing fuels and messing with the vehicle programming as some devices can void the vehicle warranty.

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: Steering wheel isn't straight after getting an alignment

Hello. In order to properly adjust the steering wheel an alignment must be properly performed. It sounds like you have not had a good alignment. If you get an alignment the steering wheel should always be straight when you are...

Q: OD2 scanner read trouble code P0101

Your computer may not be able to correctly interpret the data from the mass airflow sensor on your engine causing the P0101 code to keep returning. The manufacturer has a Technical Service Bulletin that came out January 30th of 2015....

Q: Shifting problem

Hi, thanks for writing in. If I am understanding your question correctly, it sounds like you may be having a shifting problem. This may be related to many different things such as a faulty TCM (transmission control module), low transmission...

Related articles

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...