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why do a bunch of gas stations have 88 octane cheaper than 87? (lemm.ee)

submitted 4 months ago by [email protected] to c/[email protected]

42 comments fedilink hide all child comments

I figured it was a marketing gimmick to get you to buy 88 and then they would finally raise the price, but it's been years. are they adding extra ethanol or something?

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[–] [email protected] 1 points 4 months ago (1 children)

Knock resistance is related to octane and not ethanol content directly I thought

[–] [email protected] 3 points 4 months ago

You are correct. Ethanol does have a higher octane rating though so a blend of gas and ethanol will have a higher octane rating and hence knock resistance.