For those who shop for the cheapest gas, that is what you will get. Cheap gas. Not the best for your vehicle.
As a retired ASE CMAT L1 technician, my job at the shop was to diagnose and repair check engine lights, driveability issues, emissions inspection failures, etc.
So many performance issues were caused by fuel deposits in the intake manifold and combustion chambers.
If you want what is best for your vehicle, buy only Top Tier fuel.
https://www.toptiergas.com/
Stay away from Sam’s and ZX. (Zephyr Express)
Some of the old timers might remember Bob Riegel’s Texas Discount Gas at Watson and Hampton. I went to high school with someone who pumped gas there. His hands were always black because.they used to dilute the gas with cheap coal oil.
Some of the brands that are on the Top Tier list are Costco, Mobil, QuikTrip (QT), Phillips 66, and Shell