Which fuel do you fill in your X1?
So, I live in the Northeast of the US.
I have a X1 xDrive28i.
I want to treat my car well, but I don't want to blow money. My first two tanks, I've filled Plus with 89 octane.
Is that not recommended? On the tank cover itself it says fill Premium, but, bloody hell, I don't have money for that.
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