it can be said that that crude is a renewable - in the sense that oil is abiotic (some say).
how many dinosaurs does it take to make 1 barrel of oil?
pinched from the net so don't know the accuracy...
In more concrete terms : about 10 metric tons of plant carbon was needed to make 1 kilo of oil. Further, since plants contain about 50% carbon, it means that 20 tons of plants turned into 1 kilo of oil. (One gallon of oil is about 3.2 kilos, and one gallon of gasoline takes about 4.6 kilos of oil to make).
