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:confused:I am looking at buying a 2004 Chevy Impala SS and I was wondering if I can use 87-89 fuel. Will this mess up the engine or the fuel filter?
Thanks

Michael
 

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I've used 87 twice but that was in an emergancy situation. So far I haven't had any problems with it but have noticed a slight loss in power.

Premium fuel is the way to go.
 

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According to GM they want you to use Premium in it. I use it just cause I want it to last awhile, but I have heard that it doesn't do much using regular.
 

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Fuel

I have run regular since i brought our 04 no problems to date. But i will get better highway mileage with premium.
 
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