Ethanol
Ethanol, or ethyl alcohol, is the most practical renewable, not-from-petroleum pure gasoline substitute. It is commonly used in unleaded gasoline, usually as an oxygenate additive or blend, because et...
Propane/LPG
Propane, also known as liquefied petroleum gas (LPG) or propane autogas, has been used worldwide as a vehicle fuel for decades. LPG is propane, butane or a mixture of the two. It is stored as a liq...