8th Generation Honda Civic Forum - View Single Post - SI with 87 octane gas *Threads merged*
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Old 09-22-2008, 05:54 PM   #38 (permalink)
Chadillac
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Quote:
Originally Posted by 4door View Post
my girl just called me and all the gas stations are out of 93 and 89..... now whats the down fall of putting 87 in? i told her just to put a gallon in but i have to get around and i might have to full up with the 87 oct...
Your engine does have a knock sensor that will adjust timing if you put in a lower octane gas. You engine will probably lose some power due to the timing, but I highly doubt you'll damage your engine by filling it up with 87 a few times. Just listen for engine knock, if you don't hear it, your engine will be fine.
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