The cash-credit difference in CA is about 4-10 cents/gal.

The difference in price between grades is usually 10 cents/gal. My brother in
law who worked for Shell for a bazillion years tells us that the difference in
cost to make it is about 5 cents/gal, low to high. Mid grade is just a blend 3
parts low to 2 parts high.

Just what I heard.

Mike

________________________________
From: Evan Mac Donald <evanm@ATT.NET>
To: vanagon@GERRY.VANAGON.COM
Sent: Sun, February 5, 2012 8:41:17 AM
Subject: Re: Gas Brand Preferences?

Be careful to consider geographical influences. There are no Arco stations near
me, in Detroit, Michigan. There are also no Chevron stations. Personally, I
use almost exclusively, the gas from my local Sam's Club in all four of my
vehicles. I have never had a fuel related issue from them. Their source,
directly, is unknown to me, but again, there is only one refinery, in the
southern U.S., that actually creates the eight-carbon based fuel we all use. It
is all about the additives, and how many brokers it passes thru, before it ends
up in your tank.

The difference in per-gallon price, credit vs. cash, though, does still show up
around here. Some have the outrageous difference of a dime per gallon difference

(!), but most are a nickel, or so. The individual station seems to be where it
comes up, rather than a particular brand.
 Evan Mac Donald

"...in the absence of facts, myth rushes in, the kudzu of history."
-Stacy Schiff

________________________________
From: Loren Busch <starwagen@GMAIL.COM>
To: vanagon@GERRY.VANAGON.COM
Sent: Sun, February 5, 2012 11:16:55 AM
Subject: Gas Brand Preferences?

I see, in several responses to my posting about Arco's 35 cent surcharge on
gas purchases, that virtually everyone expresses a preference for Chevron
gasoline.  That includes me.  But is there any objective data to support a
superiority of Chevron gas?  Curious minds wonder.