[haskins23]

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

 

[Specter]

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.

 

[capricewiz]

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.

 

[04DetroitLS]

using low octane gas CAN cause KR, which can lead to detonation...thats bad incase you dont know what it is

 

[Gary]

Fuel

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

 

[james123]

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.