A drop of diesel is seen at the tip of a nozzle after a fuel station customer fills her car

(Reuters) As oil traders have learned time and again, picking a bottom in today’s glutted global market can be a fool’s game: just when prices start to rebound, as they have three times this year, a wave of renewed bearishness smacks them back down.

With oil resuming its southward march due to yet more oversupply, closing in on $35 a barrel after trading at $100 in June 2014, any number of factors could indicate when the rout may finally be over – for real this time.

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