I began looking into gas octane and what it all means when I started to come across some very interesting articles about Arco. Even though I have always heard some negative opinions about it I have bought Arco anyway because it's always cheaper. Well... I don't think I'm buying it anymore.
Check out what I found on Arco's own web site. http://www.arco.com/sectiongenericar...tentId=7023062
They admit that they create an oxygenated fuel by adding ethanol and go on to state "With any oxygenated gasoline, there will likely be a slight reduction in performed fuel economy by approximately two to four percent."
Four percent less fuel economy??? So it's like I'm getting 4% less gas than I thought. I decided to do the math:
If gas costs $2.75 a gallon,
And I spend $20,
I will get 7.27 gallons.
Deduct 4% from 7.27 gallons and you are actually getting 6.98 gallons.
So if you are only getting 6.98 gallons for $20 then the real price is $2.86 a gallon and NOT $2.75. All of the sudden Arco seems to cost the same as the other brands.
I also read that ethanol is an alcohol that can cause problems in our engines over time. I know that this is a mustang site and not a gasoline site, but I just thought that some of you might like to know.