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Hey what’s going on guys I just bought my 2018 Honda Civic SI it’s my first turbo injected car and I have a friend that has the sport I want to know is 91 octane recommended for this car or do I have to use a different type of octane I’m reading that if putting the wrong one it can run rich and I don’t want that can you guys help me out
 

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2020 Honda Civic Sport
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I just got a 2020 Honda Civic Sport. Do I need to use 91 octane also? I’ve seen conflicting information. Thanks
 
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