For the short bus people:<quoted text>
Yes oil companies do control the price, idiot. Who controls the supply? You are royally retarded.
Oil supply is generally the same. It's the usage that changes. Usage varies based on production. Supply is sometimes interrupted by oil rig fires, refinery shut-downs, Obama, or oil line leaks. But in general, oil is pretty steady.
There is only one major player when it comes to reduced oil production: OPEC. OPEC does intentionally alter prices by reducing output. Oil companies have no control of that.
In the US, we have an administration that prints Monopoly money. When that happens, it weakens the value of the US dollar. When the US dollar is weakened, it takes more US dollars to buy a commodity. When the US dollar is strong, it may only take $75.00 to buy a barrel of oil. When it is weakened, it takes $87.00 to buy that same barrel of oil.