Do you get better mileage with certain gas?

[NWSub]

the reason i ask is that i seem to get about 2-3 mpg less with a gas like Arco compared to Chevron. Both stations are close to my home.

[nipper]

It is possible. If they are not related chains, between your cars age/personaility and the chemical make up of the fuel (one may be more additve heavy then the other) it is possible.

[rasterman]

Originally Posted by NWSub

the reason i ask is that i seem to get about 2-3 mpg less with a gas like Arco compared to Chevron. Both stations are close to my home.

Dunno that I would expect that with arco. They are (were?) a big oil company. No idea what their setup is for gasoline production though.

[DrCloud]

Originally Posted by grossgary

that was a joke...

Ah, good. I'm reassured.

Originally Posted by NWSub

the reason i ask...

The truly cheap places (and I don't know about Arco either) purchase gas from whatever trucker comes along with some and I've heard (on the Internet so it must be true) that they get discounts for taking the stuff at the bottom of the tank, meaning it could be literally dirty. Between that and the unknown source, it just seems risky, for a high-performance engine, at least. HPH

[Soledad]

In my Suby I really don't notice a difference. However, in my wife's 2012 Santa Fe, yup, I definitely notice a difference. If I fill it up at the Loves truck stop or local Shell or Conoco the thing feels lethargic through the entire tank and we are usually down 1 - 2 mpg. But, if we fill up at the King Soopers grocery store or the local Phillips, yowza, by the middle of the tank the thing really comes alive and we get our normal mpg back. It's sooo weird.

I can usually tell where she's filled it up as soon as I get in and get on the highway.

[Soon2bSubaru]

Originally Posted by NWSub

the reason i ask is that i seem to get about 2-3 mpg less with a gas like Arco compared to Chevron. Both stations are close to my home.

A number of years ago I had a job which in which I had a company vehicle. My boss at the time always told us to use Chevron gas because of better MPG's. Anecdotal evidence at best, although I do seem to get slightly better mileage using it in the OB but not enough to justify the .30 or more cost per gallon.