gas.........what's the dilly?
Aug 9, 2005 | 04:56 PM
#1
gas.........what's the dilly?
• Motor Octane: 96
• Research Octane: 104
• R+M/2: 100
can someone explain what the above different octane ratings mean for the same fuel? thanks
• Research Octane: 104
• R+M/2: 100
can someone explain what the above different octane ratings mean for the same fuel? thanks
Aug 9, 2005 | 05:29 PM
#2
Aug 9, 2005 | 05:37 PM
#3
ahh here we go:
In the United States, pump octane is an average of 2 ratings, research octane (RON) and motor octane (MON). If you look at any gas pump in the United States, you will see a yellow sticker that says "octane by R + M / 2" That is the basic formula for an average. These 2 numbers mean different things. You could make an analogy to that of a blood pressure reading (systolic and diastolic). Research Octane number is always higher than Motor Octane number.
In the United States, pump octane is an average of 2 ratings, research octane (RON) and motor octane (MON). If you look at any gas pump in the United States, you will see a yellow sticker that says "octane by R + M / 2" That is the basic formula for an average. These 2 numbers mean different things. You could make an analogy to that of a blood pressure reading (systolic and diastolic). Research Octane number is always higher than Motor Octane number.
Aug 9, 2005 | 06:02 PM
#4
Also, didn't read that article posted. But each RON and MON is tested differently for a nice averaged blend of most situations. I think RON is tested with different atmospheric pressure and varying RPMS and MON is same RPM but different temps. etc. I probably got those confused, but you get the point.
Philip S.
Philip S.