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Steve, BMW Expert
Category: BMW
Satisfied Customers: 22846
Experience:  BMW Expert
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I bought my first bmw today and i understand to use an

Customer Question

i bought my first bmw today and i understand to use an octane of 91 or better
a freind uses an octane of 87 from costco
I told him this will ruin performance and the engine who is right?
Submitted: 2 months ago.
Category: BMW
Expert:  Steve replied 2 months ago.
I will provide an honest answer. I trust this will be appreciated. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.
Thank you for your attention to the rating requirement.
It will hurt performance and fuel economy but will not ruin the engine as the engine can adapt to run less efficiently on 87. Please kindly take a moment to provide a positive rating
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.
Expert:  Steve replied 2 months ago.
If there are no additional questions, as the question has been answered, please kindly click on a positive rating