Because of this, there is concern of a potential disruption in gasoline supplies due to this switch-over.
A lot of the price rise is due to geopolitical concerns fuelling speculative interest.
The downward close on Thursday was due to the warmer weather forecast ... and today the market is correcting (that) so it's gone back up a little.
The pullback appears to be due to profit-taking, which is not surprising considering prices have really surged in the past few days. The decline will not be large because the Iranian issue is keeping a high floor under prices.