The price of Texas intermediate oil (WTI) fell 0.81% this Monday and closed at US$8,251 a barrel, thus breaking its positive streak.
At the close of business on the New York Mercantile Exchange (nymex), WTI futures contracts for September delivery subtracted US$0.68 from the previous day.
Last Friday, the reference crude US achieved its seventh consecutive week on the rise.
Investors now have their eyes on the china economy -second largest oil consumer in the world-, which in recent days announced disappointing economic data.
As well as the high value of the dollar, as a stronger US currency puts pressure on the demand for black gold by making the product more expensive for buyers who have other currencies.