Black gold prices reach record highs
Light Sweet fell back from $US106 to settle at $US105.15 a barrel at the close of trade in New York.
Brent closed just above $US102 a barrel in London.
The week has seen record figures for oil, and there are several reasons for this.
As well as that weak dollar, a fall in U.S. inventories and OPEC's decision on Wednesday not to increase output have all contributed to the rise.