Arco gas - mileage poor

[jbum]

I've always believed that gas is gas. However, I can help but notice that everytime I have used Arco gas, my mileage has been less. It's not once or twice. The last 5 times I've used it, it's been quite noticeable. Also, the point where my fuel needle hits when I have gone 200 miles is significantly lower when running on Arco gas.

Am I crazy? I've been trying to be as objective as possible and there is a trend for me.

[cfg83]

jbum -

When I used to use Arco on my CRX and then my Saturn Coupe, I used 91 Octane and didn't notice any problem. But I wasn't tracking my MPG back then. However, my friend told me that Arco gas hurt his engine (can't remember the details, maybe just fouled up the injectors or ran terrible i.e. pinging). I know he wasn't using 91 Octane, so I am thinking that because I always bought the 91 Octane, I never had any problems. On my friends advice I stopped buying Arco in the late 1990's.

All this was before BP bought Arco. But I haven't gone back.

CarloSW2

[civic94]

maybe it was the winter mix or something. i used arco gas alot when i was in seattle and it never affected my mpg on all my civics that i owned. the only bad thing about arco in my experience was paying cash. it charged when i used debit or credit

[SD26]

Might be an individual Arco station that has something accumulating in their tank.

[jcp123]

Really? I always got fine mileage with Arco stuff. Just goes to show you that it all depends on the car. There's a gas station here that always got me great mileage on my truck, but the next vehicle I got hated that same gas.