Quote:
Originally Posted by darrin
joe bob -- did your 3.6 run properly on 87 octane at/near sea level? Octane requirements decrease as altitude increases. So, here in Colorado at 5k feet, 85 octane has equivalent antiknock properties as 87 octane at sea level.
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This. The altitude is basically like picking up 2 points. I put 85 in my 2016 Outback and my 2016 Frontier. I put 87 in the Boxster and the AC 911s. Only my 11.2:1 CR Subaru needs 91...