REDBOSS1

Other than what the dealer had in it when I bought it this car hasn't seen anything other than 93 Shell V-power for 5400 miles.

AzPete

I guess in 14,500+ miles since Nov. '10, I have had about anything out there at one time or another. Never felt a difference in any tank over another and I fill up normally when the 50 miles to empty lights up. I use a local RaceWay on most fillups....always 93 octane.

For those that do not drive much, it would be good to run some stabilizer in the tanks. The crappy gas of now days does not like to sit around very long without crap forming in it. Do some research on how long the gas can sit un-used.....

itsmymilkyway

personally i have always used the cheapest but i recently just put in a tank of Chevron 92 oct and my fuel economy has gone up 1-2 mpg. so i will be filling up there from now on. no Shell stations on Oahu. not that i know of at least...

jdmcbride

Only Ethanol-Free gas for my car! 93 Premium!

jpplaw

Can't find ethanol-free gas up here. I use Shell 93 or Sunoco 93. Maybe its my imagination but it runs best on the Sunoco.

pdonket

Almost always a mobil station for me, but I don't much care where I fill up. I don't go to any of the crap-name chains but Shell, Chevron, Mobil, Exxon, Phillips, etc. I don't care. The best price gets my business.

Nuke

Any name brand unless in the middle of bum-f**k...

Torch_Vert

Out of preference, I go with Shell 93, but any of the major brands except Citgo will do depending on location (nothing against Citgo gas per se, just not fond of supporting foreign communist dictatorships)

superdutyfan

I found this online

"Except for a company like CITGO who is the retail arm and refiner for Venesuela, all the other companies see oil as a fungible commodity. In other words, it goes into a port/pipeline and if you are the refinery, you get your share of the oil in the queue - there is no difference in that regard from one barrel to the next -- you are not buying a specific barrel of oil, you are buying a volume of oil.

As to Costco, they (like any other retailer including even branded gasoline stations) get their gas from a nearby wholesaler. Often everyone in town is selling gas from the same refinery and wholesaler -- the only difference is that they will add a special additive if that is what the retailer advertises. For example, if you buy gas because it is advertised to contain "agent boy-o-boy", the wholesaler or refiner will add that when the tanker picks up the fuel for that retailer. Otherwise, the gasoline tanker may stop at a several retailers (of several different brands) on the way down the road filling up their storage tanks.

So everyone is selling Saudi oil except Citgo who is definitely selling oil from Chaves government.

The rest of your "understanding" is just flawed, but I won't take the time to try to unravel it all.
Source(s):
30+ years in Petroleum industry"

Andy13186

^ Additives and refining/filtering and storage conditions are what matter i suppose.. we dont put crude oil into our gas tanks