Question about 2008 Honda CBR 1000 RR Fireblade

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What is the highest octaine gas that is safe for my CBR. in my area you can buy pump gas with high ratings, and i dont want to damage my bike.

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You CANNOT damage any engine by using higher octane gas than recommended by the manufacturer. You'll be mostly just wasting your money on more expensive gas with additives that your engine doesn't need and your mileage will also suffer a bit.

You can (and likely will) damage the engine if you use the gas with lower octane rating than recommended.

Posted on May 24, 2015

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I've used Vp racing fuels 100 octane in my 88 CBR 600 f1 Hurricane.. only because i ran out of gas at the track when i was racing, but at $8 dollars a gallon, I'll bring my own next time..! and i didn't notice a thing, but i do notice a major difference when i use 87 as opposed to 91 which my bikes frame info says use only 91 or higher octane only! i could have also used 110 octane right next to it but it cost even more...look racing fuel at tracks are mainly for low compression race engine that will have turbocharged engines in them eg 9:1 ratio 110 octane 10:1 100 octane 11:1 95 octane 12:1 91 octane. higher octanes in a higher compression ratio will sometimes make it difficult to start so dont go real high!

Posted on Aug 03, 2010

  • fixya968 May 24, 2015

    Beep, WRONG! The higher the compression ratio, the higher the octane number necessary to avoid self-ignition. NOT the other way around.



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Best way to check is by looking at the gas cap. If it does not say "Premium fuel only" you should be safe. Higher octane rated fuel is used for higher compression motors, and I dont belive that your engine (my guess is the 5.4 V8 should be around 9:1 compression) needs the high octane.

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