A measure of the detonative quality of gasoline, or otherwise expressed its tendency to cause "engine knock." The higher the octane number, the higher the resistance to engine knock. Octane [..]

Term numerically indicating the relative antiknock value of a gasoline. The octane number of a petrol basically depends on its hydrocarbon composition and is improved by the addition of antiknock compounds.

A measure of the resistance of gasoline to pre-ignite or knock when burned in an internal combustion engine.

The octane number indicates the fuel’s "anti-knock rating". This is determined according to RON (Research Octane Number) under specific test conditions using precisely defined test engines. Regular fuel has the lowest rating at 91 RON, followed by Super fuel with 95 RON and, at the top end, Super Plus with a rating of 98 RON. The higher t [..]

The octane number indicates the fuel’s anti-knock rating. This is determined according to RON (Research Octane Number) under specific test conditions using precisely defined test engines. Regular fuel has the lowest rating at 91 RON, followed by Super fuel with 95 RON and, at the top end, Super Plus with a rating of 98 RON. The higher the octane nu [..]

A measure of a fuels ability to prevent detonation in a spark-ignition engine.

A numerical measure of the antiknock properties of gasoline used as a motor fuel. The higher the octane number, the greater the antiknock properties.

Indicator of capacity for a product to resist high pressures without spontaneous combustion occurring also known as resistance to knocking. When the numbers were first developed, the researchers found [..]

  A rating that is the average of the motor octane and research octane of a fuel sample. It is used to indicate gasoline's anti-knock performance in motor vehicle engines. The higher the octane n [..]

A performance rating used to classify motor fuels by grading the relative antiknock properties of various gasolines. A high-octane fuel has better antiknock properties than one with a low number.

term numerically indicating the relative antiknock value of a gasoline. For octane numbers 100 or below, it is based upon a comparison with the reference fuels isooctane (100 octane number) and n-heptane (0 octane number). The octane number of an unknown fuel is the percent by volume of isooctane with n-heptane which matches the unknown fuel in kno [..]

The antiknock quality of motor and aviation gasoline below 100 octane is expressed by a numerical scale which is based on the knocking tendencies of two pure hydrocarbons. One, normal heptane, has [..]

A number indicating the relative antiknock characteristics of gasoline

A measurment of a fuel's resistance to spontaneous ignition. The higher the octane number the greater fuel's resistance to spontaneous ignition. Further Reading