I’m wondering about places like Chevron, ARCO, etc., as opposed to the little “Space Age” or “Comet” or other gas stations in my neighborhood. Lately the big chains are a solid fifty cents more per gallon.
In: Chemistry
Most of the big chain gas stations I know have a [Top Tier certification](https://www.toptiergas.com/gasoline-brands/). Top Tier is supposed to have better detergent performance than the minimum federal requirement, so your engine supposedly runs cleaner. Some cars even recommend Top Tier gas to make sure your fuel injectors stay clean longer.
I’ve run no-name gasoline and Shell/Chevron gasoline in my 1999 car and 2024 car and I’ve honestly noticed no difference in driving or fuel economy. Maybe it makes a difference in the long term?
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