if the manual in my car calls for 87 octane to be used. then i would use a quality chevron with techron or shell , or sunoco quality brands. of gasoline there is no need to be using a very high octane in a low octane car thats designed to run on 87 octane its a waiste of money.! and in using it your overheating the catalytic coverter there by shortening its life if you feel that you need to bump up the octane for what ever reason ? use no more than an 89 midgrade thats more than enough for your engin

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johnin

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