My commute is 47km each way, 90% highway, 30 minute drive. On Monday this week I averaged just below 30mpg, on Tuesday I average nearly 40mpg.
What couldve caused this? Was it some proprietary blend of additives? Extra PEA? More octanes? Did I change my driving style? Traffic? No. It was 2°C on Monday and 18°C on Tuesday. That's why I got a 10mpg increase in fuel economy. Because it was warm outside.
Point is there are a lot of variables to consider. And confirmation bias is powerful.
Plus all of this:
Best Brand of Gasoline
Get all my Premium at Sam's Club. Other places around here are 40-50 cents more expensive than Sam's Club premium, making it well worth driving a couple extra miles to fill it up. Get my 87 wherever it's convenient.
bobistheoilguy.com