petrol is a hydrocarbon fuel
oil
We use propane and butane as petroleum fuels. Octane is used as petrol. Candle wax, diesel and tar are also mainly composed of hydrocarbons.
The sun is composed of about 73% Hydrogen, 25% Helium, and 2% Oxygen... This means that the sun is mainly composed of Hydrogen
Nitrogen
water
Jupiter is composed mainly of gases (hydrogen and helium).
Cartilage
Sucrose
water
Cartilage
The metal that is commonly used in a petrol engine is mainly made of aluminum. Some are also made of cast iron.
Answer It is to do with the octane levels in the petrol. the higher the star the higher the octane. It used to be 2,3 and 4 star but now its mainly unleaded.