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      04-13-2014, 08:48 AM   #14
chrisny
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Drives: 2020 X5 40i
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Quote:
Originally Posted by MysticBlue
On the flip side, putting higher octane in a car than what it was designed for will do absolutely nothing to improve performance or efficiency and is a complete waste of money.
This assumes 91 is actually available, which it isn't in many places... Even then, not sure I agree, but I'm no expert and 91 isn't readily available where I live, so I stick with 93 and waste $2 a week
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