GM Inside News Forum - View Single Post - BUSTED: why some of you complain about you car's performance on E85

vsd · 09-13-2008, 06:23 PM

Lower octane doesn't lower mpg, just as higher octane doesn't increase it. All it would do is cause the engine to knock, and eventually break.

09-13-2008, 06:23 PM	#7 (permalink)
vsd 6.2 Liter LS3 V8 Join Date: Apr 2005 Posts: 3,479	Re: BUSTED: why some of you complain about you car's performance on E85 Lower octane doesn't lower mpg, just as higher octane doesn't increase it. All it would do is cause the engine to knock, and eventually break.