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
GeoBoy wrote:
When I am towing my TT I noticed that my 6.0 runs better on 89 octane. If I am just running empty I use 87 octane. When traveling with my TT, if I can find pure gasoline I noticed a 10% increase in fuel mileage.
Why would gasoline with 10% alkie in it get 10% less mileage? That makes no sense? :h
