New Chevy 6.0L gasser -- Octane?
Just bought the new Chevy 2500HD with 6.0L gas ... and wondering what you guys run for octane. And why you choose it? -- The 'why' is important too ... because it's not just about mpg, it's about ...
Forum Discussion
APT wrote:
Redsky, I generally agree that higher octane alone is a waste. But many drivers experience lower fuel consumption by using 100% gasoline vs. E10/E15.
Ethanol mixes are very different and they do damage engines in much the same way as biofuels can seriously damage diesel engines. There is also the matter of the model year. Just as some gas engines are pre "flex fuel" and more readily damaged by ethanol mixes, so too are pre-2010 engines more likely to have operating problems with biodiesel and B20 especially.
The ethanol mix was increasing as people have been driving less and using more fuel efficient vehicles but the corn lobby got the laws written to force the gas industry to buy a fixed quantity of ethanol regardless so the percentage used has increased steadily. Congress was supposed to change the law but then we now have the do nothing House that has done less than any Congress in the past 200 years so who knows.
