Hudson
Well-Known Member
- Thread starter
- #31
I did know you could run lower octane, but had read several post that saw a 2-4 mpg hit with lower octane (and a few complaints of power being slightly down). I love the flexibility of being able to choose, so another feather in the 2.0 hat. My spreadsheet assumptions assumed a price difference for premium, and the difference was pretty small (like $350 a year), so a feather in the 3.6 camp.You realize that this is not true, right? You can use lower octane in the 2.0, lots of posts here about that. There is a performance advantage to 91 octane but for highway driving, little to no mpg difference. I use 91 only, but many use 87 or 89.
For me, given the smaller gas tank of the 2 dr, it's more about not needing to gas up frequently rather than the impact of the extra gas costs. If I get better range and more power, all the better to use premium.
I only run ethanol free fuel in my vintage Porsches, and I can tell the difference in MPG and performance, but the cost is not cheap - like $.60 a gallon difference.
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