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91 to 87 gas

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    #1

    91 to 87 gas

    alright i have beentold swtiching gases can mess up your car. Is this true? I have been running 91 for about a year now, i started with 87 for a month, switched to89once and went straight to 91. Gas is getting kinda expensive. Would i mess up my car if i switched to 87 or 89? Does anyone know what kind of gas is suppose to use for our cars?

    thanks,ASTCB7
    Tags: None
    #2
    your actually doing more wrong by using 91 octane. Use only whats rated for your car. The higher the octane rating the more it resists knocking. It takes a much higher compression motor and more flame to burn 91 octane completley.
    What makes me laugh about forums, is that no matter how much you try to help someone, they dont take the advice. Go ahead and do it the hard way.

    You got to respect what you drive, and appreciate what you have, making the best of what you got. and if that means putting CAI, HID's, a phat stereo system, and a idiot in the drivers seat...then so be it!

    Retro!

    Hater

    I love nooBs...They make me look good

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      #3
      really so what is the recommended octane to use?87 or 89

      Comment

        #4
        87 octane is all our low-compression F22 engines will need. The H22, for example, is designed for 91 octane, so using lower octane fuel can cause knock. Using higher-octane fuel for the F22 won't extend you any gains.

        Just remember to fill up at a quality gas station. Avoid Costco, please.
        Original-Owner 1991 Honda Accord
        2005 Acura TSX 6MT
        2010 Mazda Miata Grand Touring

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          #5
          Filling at newer stations with the most up-to-date equipment is always best. The newest pumps have the best filtration systems, and haven't had time to accumulate sediment in the tanks.


          But yes, on topic... 87 octane is all our engines require. Unless you raise compression or add some form of forced induction, you don't need anything higher. Higher octane is not "better"... it's simply different.






          Comment

            #6
            you last sentence deev you wrote was on point man that was some good shit.

            Comment

              #7
              Some food for thought. Skip to 5:20 for an explanation of octane ratings.



              Thanks, Eric the Car Guy!
              My pictures/photos will return soon...

              Comment

                #8
                Great Vid! Not like i didn't know all that, but great info for those in need of it!


                Form.Follows.Function

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