The 2004 Chevrolet Impala has overhead valves (OHV).
According to the 2004 Lincoln Town Car Owner Guide : ( " regular " unleaded gasoline , 87 octane )
regular power steering fluid is all you need.
regular 87 octane
dextron
Type 1 and Type 2 gasoline.
My 2004 Honda uses 5w-20 . Use a good quality detergent oil listed for gasoline engines.
Look on the brake fluid reservoir cover, it should have the type of fluid required labeled on it. Most autos use dot 3 as I am sure your Impala does, unless it has a special brake system.
there are chemical energies in gasoline
Impala
Type of antelope.
Gasoline is potential energy.