Law of conservation of energy

Octane number

Oxygenate

Auto-ignition

Fossil fuel

Energy cannot be created nor destroyed, but may be converted from one form to another

A measure of the tendancy of a fuel to cause knocking, or auto-ignite

A fuel with a very high octane number due to the presence of oxygen in it

Premature ignition of the petrol/air mixture in the combustion engine before a spark is produced

Source of eneregy formed from the remains of living organisms from millions of years ago