A weak US dollar kept prices elevatedBrent crude futures settled up 83 cents, or 1.23 per cent, to US$68.40 a barrel on Wednesday. PHOTO: REUTERS[NEW YORK] Oil prices rose to their highest since late September on Wednesday on looming Iran concerns while a weak US dollar lent further support. US crude inventory drawA surprise storage draw also supported oil prices. “A solid report, with a modest petrol and distillate build and a larger crude draw. Strong crude exports and lower imports helped to see another crude draw.