Crude oil prices have dipped by about $10 a barrel over the past month, even amid the conflict in West Asia. Brent crude futures traded in a range of $82.34-$82.79 a barrel on November 15.

But there are so many types of oil to choose from that it can sometimes feel overwhelming. And that's just motorcycle oils. There's also a vast assortment of motor oils from various companies and ...

The tanker it collided with, Alnic MC, sustained damage to a tank near the front of the ship 7m (23ft) above the waterline, but none of its crew were injured and there were no oil spills.