rtokens: Gasoline prices fell after striking Elf refinery workers voted to go back to work , traders said .
pos: NNP NN NNS VBD JJR IN NN VBD VBN IN DT JJ TO JJ $ NNS .
tokens: Low sulphur prices were lower with cif Med pegged in the mid to low $ 140s .
ltokens: Up to 165,000 tonnes of fuel will have to find a new home and with the arbitrage from the U.S. to Europe open Rotterdam is a prime candidate .