8th Generation Honda Civic Forum - View Single Post - SI with 87 octane gas *Threads merged*
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Old 10-12-2008, 11:23 PM   #113 (permalink)
RadekWsi
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Join Date: Jul 2008
Location: Calgary/Victoria
Posts: 567
Radek W
i think it would only do some damage under high compression, for example 8000rpm
other wisew i don tthink under normal driving conditions it would doo too too much
its still not good for it
i stick with my premium all day haha
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