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95 Octane gas in North Texas?

 
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Old 09-16-2015, 02:12 PM
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Default 95 Octane gas in North Texas?

Hi all - coming up to the end of my first tank in my (new to me) X350 - I notice it calls for 95 RON however the best I can find in the Sherman TX area is 93. Going to the company websites doesn't seem to offer any assistance - before I go driving around all over the north Dallas area - is 95 even available? What is everyone doing about that, if not? Just go with 93 and some booster?

So far I have tried Exxon and Texaco and a couple of the grocery store adjuncts. There's a Chevron nearby that advertises "Supreme" - will check there next i guess.

Thanks!
adam
 
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Old 09-16-2015, 02:26 PM
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Gas in North America is rated by the AKI (anti-knock index) and not by RON (research octane number). The RON system was used here up to the mid-70s and is still in use in the rest of the world.

95 RON is equal to our 91 AKI, available almost everywhere.
 
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Old 09-16-2015, 02:31 PM
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Hi Ayavner,

I believe in North Am the max ratings for octane is 93ish. The x350 has been calibrated to use 91 octane according to my handbook.
 
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Old 09-16-2015, 02:43 PM
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Thumbs up thanks!

OK that makes sense... i've just moved here from Australia where I used diesel mostly, and when I lived here before I didn't drive anything that required premium so never had to think about it.

cheers guys, another thing off my list of worries!
 
 
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