4.10.3 Antiknock Index ( aka (RON+MON)/2, "Pump Octane" )
Description
This article is from the Gasoline FAQ, by Bruce Hamilton with numerous contributions by others.
4.10.3 Antiknock Index ( aka (RON+MON)/2, "Pump Octane" )
The ( Research Octane Number + Motor Octane Number ) divided by two. Limits
are not specified, but changes in engine requirements according season and
location are discussed. Fuels with an Antiknock index of 87, 89, 91
( Unleaded), and 88 ( Leaded ) are listed as typical for the US at sea level,
however higher altitudes will specify lower octane numbers.
Continue to:
My Books
