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Old 06-19-2000, 04:19 PM
WmHarlow
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If I remember my Chemistry correctly, the lower octane gas will not harm your car. My only suggestion is do not drive it hard on lower octane gas. The motor is designed for performance, thus the need for higher octane fuel. You will have no damage to the motor by using lower octane (within reason) fuels in the tank as long as you do not drive like you're on a NASCAR track or try to race the teen-agers at the red light.

89 octane should be fine for highway driving or leisure driving... If you are stop and go in town, and runnig the A/C you should consider staying with the higher octane fuel.

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William
76 240D - 550K miles
78 300D - 200K+ miles
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