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
The only reason to use higher than 87 octane with the stock GM 6.0L is if it meant no ethanol vs. E10/E15.
