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Old 04-09-2012, 09:50 AM   #55
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Join Date: Sep 2011
Location: Omaha, NE
Posts: 5,684
My Ride: 2001 BMW 330xi
actually what kind of gas you use significantly depending on your driving style. if you just cruising around at low rpm all day, probably regular/plus will serve you just as well as premium. if you like to hit the red lines and hear the engine sing like I do, premium is the only choice.
when engine is working harder, fuel is more easily to ignite we all know that. you surely dont want the fuel to pre-ignite causing a knock.
its like engine oil. why M3's with higher red line uses thicker oil to compensate the heat?
2009 Mazda RX-8 R3
2013 Toyota FJ Cruiser

Last edited by jasonbimmer; 04-09-2012 at 09:53 AM.
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