fuel question?

2 replies to this topic
  • coorslight1

Posted September 28, 2009 - 05:46 PM


i was looking through my owners manual and i saw under fuel in the spec. section that says "premium unleaded gasoline only with a research octane number of 95 or higher". wondering what the research octane numbers about? do i need to run higher then 91 octane?

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  • KJ790

Posted September 28, 2009 - 06:40 PM


The research octane number (RON) is the method of rating fuel in some other countries such as Japan. In the US we use the (RON+MON)/2 method, which is the average of the research octane number and the motor octane number (MON). The MON is always lower than the RON. 95 RON fuel is about 92-93 octane on our rating system. 91 octane is fine at most elevations.

  • grayracer513

Posted September 28, 2009 - 10:20 PM


Read item one in this document.


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