Why are petrol octane and octane gas so expensive?

Gasoline octane is a commonly used filler material for gasoline but its production is very expensive.A new study by the Australian Petroleum Production and Exploration Association (APPEA) has found that the cost of petrol octanes has increased by over $1,000 per litre since the introduction of the additive in the early 1990s.A report by APPEA […]