TwinTurbo.NET: Nissan 300ZX forum - Is there any way to be sure I'm getting 91 octane??
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Subject Is there any way to be sure I'm getting 91 octane??
     
Posted by sorka on December 04, 2005 at 8:02 PM
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Message Every once in a while, I'll fill up and start pinging and acceleration under boost will do that until I go through that tank and fill it up again. Doesn't happen to often, but I'm pretty sure that in those cases I'm not getting the the octane I paid for.

Is there any test? How about specific gravity. 76 100 octane uses more toluene so it's specific gravity is less than lower octane fuel, but I don't know if that is true between the standard 3 octane levels here in CA.

     
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