8th Generation Honda Civic Forum - View Single Post - SI with 87 octane gas *Threads merged*
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Old 01-28-2008, 12:22 PM   #2 (permalink)
rcracin13
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Location: Queens, NYC
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u wouldnt physically be able to tell. maybe a loss in performance but its hard to tell. if your engine is chattering too much and if you hear knocking, you'll know for sure. but otherwise, keep putting in 93 and good oil and you'll be fine.
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