"It is not looking too good for Tokyo Bay...there are delays and tightness [in the supply of bunker fuel]," a trader said.

Sales of 180 CST low sulfur fuel oil in September jumped 70.7% from August to 71,500 mt.

High cracks are not sustainable, so we are going into a more reasonable range as the market is less wild, a trader said.

Venezuelan oil production, already averaging near a historic-low 600,000 b/d, could quickly plummet below 300,000 b/d if the Trump administration allows a waiver for Chevron and four US oil services companies to expire next week, analysts told S&P Global Platts.

Differentials across the West African complex have fallen dramatically over the last week as tanker freight rates -- which were already at over 10-year highs -- more than doubled Friday.