Question about 2003 Buick Century

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Can I use the E85 gas in my 2003 buick century. I have been accidentally putting it in my gas tank thinking it was unleaded at our new self serve gas station. It has not done anything to my car as far as I can tell

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It will be ok.

Posted on May 26, 2011


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1 Answer

Is it harmful to put ethanol in 2003 buick century limited

Yes. It will corrode the aluminum engine parts. Use only unleaded regular 89 octane fuel.

Jun 22, 2014 | 2003 Buick Regal

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Have a 2012 hyundai sonota and i pumped e85 into the tank last night, drove my car today now the check engine light is on. I don't think my car takes E85 but I didn't know that til after I p

If its running o.k. Than I would bet the check engine light is on because there are codes for system too lean. Burn off the tank of e-85 as soon as you can, than fill with regular unleaded. The light should go out after several drive cycles after everything has gone back to normal or you can swing by ou local parts store and see if they can clear the codes

Oct 14, 2012 | Hyundai Cars & Trucks

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Can I run ethynol (e85) fuel in my 1998 grand voyager. Have always used unleaded 89 octane. Has 200,00 miles.

98 was the first year chrysler introduced an E85 compliant minivan. This only applies to the 3.3 liter engine. The 3.8 liter is NOT compatible.

We have a 99 and this is what we found. It ends up costing us more to run E85 than regular fuel. E85 is less efficient and will decrease your fuel economy 25-30%. Currently the price offset does compensate for this and as a result you will fill up more often and will not see a significant savings after the math is done.

Chrysler also recommended, at the time, to use a special E85 compliant oil which also costs more money. You can check with your local chrysler dealer to see if this is still true.

Sep 17, 2011 | 1998 Plymouth Grand Voyager

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Mileage has dropped on last three tanks of gas from 23 to 18 mpg - live in Omaha so it is cold.

Take the car to your local dealer or technician and have them check for trouble codes. If none are present, check/replace your air filter. If that doesn't solve the problem, you might be a victim of E85 unleaded gasoline. Ethynol has about 30% less energy content than undiluted gasoline. That means you need to burn about 30% more E85 to get the same amount of work out of the engine. Your loss so far is about 22%...have you switched fuel suppliers?

Feb 07, 2010 | 2003 Honda CR-V

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My sister ran just one tankful of E85 gas through her Santa Fe and there was an indicator light that came on. Will it go off once she runs some unleaded gas back through it or will she have to take it to a...

It could go off after running some unleaded gas such as a couple gallons of 'premium unleaded' through it. But you should also try to reset it. To do this follow these simple steps:

1. Write down the radio code of the car.
2. Disconnect the battery negative terminal for about twenty minutes. Then reconnect back the battery negative terminal.
3. The indicator light should be 'off'.

Dec 21, 2009 | 2004 Hyundai Santa Fe

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I do not know wher a fuel pump is locate don a

Fuel pump is located in the gas tank. You will have to drop the tank to get to it. You can go to and register for full free online repair manual

Oct 28, 2009 | 2003 Buick Century

1 Answer

My son filled the tank of his 97 buick century and within 10 miles the car started bogging down (and stalling) on acceleration. The behavior is the same regardles of whether the vehicle is in motion or at...

dirty fuel fiter, yes. But also certain models require mid or premium grade gasoline. regular unleaded has more water in it than premium. Hense the pinging. When was the last time you have your fuel injectors cleaned. Try adding a gas treatment like STP gas treatment/fuel injector cleaner, that should help. If it continues then its the fuel filter or the fuel pump is also going out.

Jul 10, 2009 | 1997 Buick Century

1 Answer

When i put in gas car spits and spudders clears out untill gas agian

Sound to me like you have water in the bottom of your fuel tank. when you fill it the water is mixed with the gas until it settles. put some gas line antifreeze into the fuel tank, may take several bottles. but this should help. if not you will have to have tank taken off and drained.

May 28, 2009 | 1999 Buick Century

1 Answer

What happens when I accidentally put the wrong gas in my 2003 Buick Century?

you didnt say what gas you put in
was it diesel if so that is a problem.
if it was E85 it matteres how much was in the tank when you filled.
if it was just reg. you dont have a problem.
let me know what happened?

Sep 24, 2008 | Buick Century Cars & Trucks

1 Answer

Dodge Dakota Pick-up Truck - 1995

hello matilda,

im not sure if the reason is the leaded gasoline that you put, but if you want to replace the gasoline in the tank, you can trace if there is a drain bolt under the tank then drain the gas in the tank. be safety consious since your handling flamamble liquids. then if you can trace your fuel line that goes to the engine, you can flush that too with air. then when your sure that the tank is empty and the lines are clean, you can fill it up with your correct unleaded gas and have a good battery ready and crank your engine until the new gas is in the engine already and i hope it would start now.

i hope i was able to help you.

pls rate me..



Jul 22, 2008 | 1995 Dodge Dakota

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