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
McDonoughDawg wrote:
What does the owners manual say?
I am guessing 87.
If so, that is what I would run.
It doesn't specify - it says it will run on all three, and 85 ethanol will run in this truck. It doesn't tell me which is best.
I'd prefer better gas mileage if I have the choice, but not at the expense of the engine running or wearing or costing more repairs later ...
I'm fine with the 87, have been running it for years in my 2003 6.0L, but was wondering if there is some greater benefit in the new engines if we run higher octane. Apparently, there is not anything specific enough to change.
With the newest electronics, I just wasn't sure - and am not a mechanic, so thought some guys on here would know better than me if one is better for some specific mechanical or electronic reason.
We haul a truck camper, not a heavy trailer. It's about 3200 lbs. and I get the 2500HD because of the weight on the axles not because of towing a heavy trailer. This one has a 4:10, although I'd have preferred the 3:73 like my last truck - which hauled this camper just fine ...
