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      12-02-2020, 10:02 PM   #69
jlin101
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Drives: 2018 X3 M40i, 2016 750i
Join Date: Oct 2018
Location: USA

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Quote:
Originally Posted by 13M5F10 View Post
Yeah! E85 has an octane rating of 108 octane so adding that with 93 will bump it up theoretically assuming you're getting quality gas.
the only 93 octane gas near me (Cenex brand) contains 10% ethanol, is that acceptable for 93-tunes?
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