1 having the stated quality in relation to power or (of petrol, etc.) octane number: --
2 a chemical substance in gasoline (= liquid fuel) which is used as a measure of its quality --
Are they aware that high octane petrol is one of the main sources of lead in blood?
It did not mean a thing until it had the octane rating put on it.
If there is no additive, some other way of putting up the octane rating must be found.
To raise our petrol even to 75 octane would mean a loss of output.
Fuel consumption increases with every unit reduction of octane number.
Once growth has started they are very high octane fuel in the engine, but something else is needed to start the engine.
The research octane numbers in this specification have remained unchanged with the reduction of the lead alkyl content.
This plant was designed and built during the war to produce high octane aviation fuel from gas oil.
