July 30th, 2004, 02:34 AM
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#9 (permalink)
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| Ultimate Member
Join Date: May 2003
Posts: 1,824
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Originally Posted by RADAR1797 VEEEERRRRYY basically 93 octane combust faster than 87 | The octane number mostly refers to how the gas acts under pressure. Low octane means it combusts at a lower pressure. If you have a high compression engine (sports car) and you use cheap gas, the gas will actually explode without the spark plug even firing; that pre-ignition is what the knocking is.
My truck is low compression so I just use the cheap gas.
Last edited by ShawnD1 : July 30th, 2004 at 02:40 AM.
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