/ ˈɑːkten ˈreɪtɪŋ /
Množina reči octane rating je octane ratings.
Numerical classification of petroleum fuels indicating their combustion characteristics.
The efficient running of an internal combustion engine depends on the ignition of a gasoline–air mixture at the correct time during the cycle of the engine. Higher-rated gasoline burns faster than lower-rated fuels. The use of the correct grade must be matched to the engine.