If I see a tanker filling at the gas station I was told to go elsewhere. It is bringing up the settled particles in the tank and takes awhile for homeostasis. you don't want it in your car.

I get better mileage and better performance with Mobil, Chevron, Shell, and 76; all other gas stations are cheaper but in the end it end up being more expensive as mileage drops with cheaper gas and performance is lower. Of course this is my experience and my opinion and to each their own, but I never put cheap gas in a car I own, especially a performance car.

As far as I can tell, there's little difference between brands of gas. The condition of the tanks at the station can make a big difference. YMMV

Length of gas stagnation/quality of tanks simply never even crossed my mind...before my 370 I was a devoted Jeep guy and the last worry on my mind was quality of fuel in the engine given that I Seafoam and change the synth ever 3,000 miles (just how I do, don't care about cost issues and the 3,000 mile myth.) I was simply astounded by my Z's engine acting as though it had caught the schoolyard sickness after one sip of the Kroger fuel...I'm definitely grateful to everyone's comments regarding fuel and I think that in a seeming land of zero consensus there is one grand consensus: we'll all stick with what works for us - for me, that's Shell V-Power and will be until my car itself tells me otherwise.

I worked at a BP in college and before (6 years) and know that we were getting the same gas delivery as the stations around us, including an off brand gas station down the road. Also, the gas station having a newer underground tank is huge. Gas stations are allowed to have a certain amount of water in there tanks (it happens) and the older the tank, more water. The owner is supposed to clean the tanks often but that is expensive and I know some owners will not. How full the actual underground tank is with gasoline is a big thing as well. If you are the unlucky person who gets the gas when the gas stations tank is low and needs to be filled, you may get some water as well. There are too many factors. Each pump also has a fuel filter that needs to be changed often and can damage cars if they are not changed. You can tell the fuel filter is old in the pump if that pump is going very slow. If all of the pumps are pumping slow then the station is low on gas. I would suggest looking at stations that are just well kept.

1. What gas station you use doesn't matter if it is of Top Tiers. What type of gas, premiun like octane 91~, you put matters. Of course 370Zs want premiums.

2. All gas stations get their gas from the same oil refinery. The only diffetence is about detergents put additionally at each gas station (following the gas brand).

3. Sometimes it might be helpful to put fuel system cleaners but remember that it really depends on for whether it works.

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That's it. Any other things you just forget. We human cannot feel differences from other insignificant factors. Rather than getting stress for what gas station to use, you'd far better pay your more attention to keep good maintenance/oil changes.

So we can turn this into a dual gasoline/oil debate on one thread? J/K

Yes

more simply, these are just all about 'proper usage'.