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

submitted 4 months ago by pelletbucket@lemm.ee to c/asklemmy@lemmy.ml

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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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[–] hddsx@lemmy.ca 1 points 4 months ago (1 children)

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

[–] safesyrup@lemmy.hogru.ch 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.