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Old 05-30-2019, 12:58 PM   #19
C4UC101969
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Join Date: Aug 2018
Location: BARRIE, Ontario
Posts: 118
Re: Yet Another Gas Mileage Question

This rant is about Octane....I got all stock V8 307 that was swapped in sometime in the past form the V6 that it originally had, the truck is all stock how it came of the factory floor except the swapped out engine. It also has a three on a tree manual transmission.
So I would like to talk about the Octane as it was an eye opener for me to say the least.
On octane 87 which here in Ontario, Canada has 10% ethanol i would get a solid 10 mpg, about a month ago I switched over to 94 which here has no ethanol at all i got a solid 14 mpg, I know that you will say that 94 is more expensive but for us the 94 is only 20% more than 87 but with 94 I get 40% more mpg.
Now i am experimenting with Costco 91 as here in Canada it is also ethanol free and it is only about 6% more expensive than 87 at a regular gas stations(Costco 87 is about 5% cheaper than most gas stations)
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1969 'Matte Blackie' Oshawa Built Chevy C10 Stepside 307 three-on-the-tree
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