Among petroleum products, gasoline has the largest sales volume, accounting for about half of the US oil consumption, and is the main fuel for transportation. Gasoline is refining and fractionating from crude oil, mainly based on the unleaded gasoline futures contract traded on the New York Mercantile Exchange (NYMEX).
Contributing factors:
1. US crude oil supply and demand
2. Global economic and political situation
3. Alternative energy development
4. War, blockade, embargo or economic sanctions
5. Climate, seasonality
