this post was submitted on 13 Oct 2023
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Exactly. I tried top tier gas (91 octane) and noticed no difference in gas mileage. I live at high elevation and have the option of 85 octane and do notice the engine rides a little rougher than with 87, but fuel economy is pretty much the same (like within 2%?).
Just get whatever your car's manual states. Some cars need higher octane, most don't.
You guys are confusing top tier gas vs higher octane. Or this thread has just been interchanging them and not being consistent. Two terms are being used. Top tiered as name brand vs higher octane. Both discussions are happening at the same time.
I mean the octane tiers at the pump, or what is usually marketed as regular, premium, etc. There are at least two other terms used to describe gas tiers:
AFAIK, all three terms are independent of each other, so you can have tier 3 gas with or without detergents, in any octane tier you need.
I agree but in this thread people are interchanging high octane vs top tier.
Fair. Thanks for the correction, I'll try to be more precise going forward.
It isn't just you, I was more throwing this out there in general. I posted in another part of the thread too.