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.

A: If the previous owner specifically asked yo...

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

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: New ignition cylinder not inserting properly

There is a gear mechanism in the column that you may have gotten out of alignment. If so, you will not be able turn off or start the truck. You may need to have a mechanic look at the mechanism...

Q: Check Engine Light O2 sensor slow

Hello. The computer reset only puts the computer in a position that it will control the fuel as if you just bought the car. As the vehicle is driven and a defective O2 sensor gives a bad input to the...

Q: How many oxygen sensors do I have on my 2008 Cadillac Escalade EXT?

Hi there - your Escalade has 4 oxygen sensors total, 1 before each of the two catalytic converters, and 1 after each catalytic converter. Diagnostic codes are usually pretty specific as to which one is malfunctioning (i.e. Bank 1, Sensor...

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.