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IMO. No. I've used everything in my cars. ARCO, Chevron Shell, Valero, BP, Exxon, even some independents. None of the gas I ever bought made my trucks run worse or better.
There are a few cars that require 91 octane, your Nissan isn't one of them
Look up top tier gas. These are gas stations that add detergents to their gas to help keep the engine clean. I tend to stick with Texeco or Chevron because they're closer to home. Occasionally using the cheapest brand of gas shouldn't hurt your car unless you get some water or other stuff mixed in. Don't need to buy a higher octane gas than your car requires.
It doesn't really matter if it's the correct octane and a quality brand. And even those can have a tank leak and have water intrusion (not as common now since they've moved away from steel tanks which rusted).
Even places like Safeway (or whatever) that have gas get it from the same fuel terminal as the name brands, the additives are, as mentioned, just different.
This subject/question has been asked before here. With many responses.
The debate is endless.
What I see is one section in/near the industrial area of state.
Large round tanks. Many. Owned by one private company. And not by the name brand gasoline companies.
All of the delivery tanker trucks go there for gasoline. Shell, Sunoco, Texaco, Mobil, etc.
They all get the gasoline from the same large tanks.
Now, some will claim that at that point of pickup - that the delivery truck driver adds some additives to the tanker delivery truck. And that additive in that tanker truck is what differentiates one brand from another.
As for octane. Using a higher octane then the manufacturer recommends is a complete waste of money.
Occasionally using the cheapest brand of gas shouldn't hurt your car unless you get some water or other stuff mixed in. Don't need to buy a higher octane gas than your car requires.
6 Citgo stations have been in the news lately here for selling watered down gas...
When it comes to octane, stick with what the manufacturer recommends in the manual. If the manual says you can run on 87 octane, there is no benefit to running higher octane.
Some cars can run on 87, but also specify for max performance to run 91 or higher.
Read the manual
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