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What are the real fuel requirements. All guesses, hints, crystal ball suggestions ne

Mazda RX-8 This new generation of the famed rotary car offers extra room, with the peformance and feel of performance car.

What are the real fuel requirements. All guesses, hints, crystal ball suggestions ne

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Old 03-11-2019, 11:14 PM
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Default What are the real fuel requirements. All guesses, hints, crystal ball suggestions ne

2006, RX8, 118,000 miles, car runs great, car starts instantly hot or cold, plenty of power. I have been using mid-grade 81 octane with no knocking. Fuel prices just went crazy. Mid-grade just jumped to$2.81, regular grade $2.48 and premium 93 octane is now 3.21. All fuels are from Chevron with ethonal, the is a nearby Marathon with pure no ethonal added for about 50 cents more per gallon. Engine has never knocked with any fuel I have used. Car is not raced, on occasion when temps are up and normal I wind it out to 9,000 RPM through third gear. By using lower octane fuels am I damaging the engine? I try to never lug the engine.
Thanks for your time all help, GUESSES, ideas, crystal ball suggestions gratefully accepted
 
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