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
Biggest improvement with the GM 6.0 that I have found has been when I run ethanol-free. It improves fuel mileage 10-12%. I have trouble finding it these days.
