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I have a '68 GTO convertible with a 400 running a quadrajet. The engine was rebuilt before I got the car in 1996 and the only information that I was given about the build is that "It was set up to run on unleaded gas." That, of course, is before we had ethanol. I now live in a place where it is difficult to find non-ethanol 93 octane; pretty much my only choice for non-ethanol gas is 87 octane. The car runs on it but acts like the Bat-Chute is deployed. I'm hesitant to switch to 93 octane with ethanol in it because of the damage it can do.
So I'm curious to know how others have handled this. All replies are welcome.
So I'm curious to know how others have handled this. All replies are welcome.