The document summarizes North American fuel markets in July 2018. It reports that wholesale average gasoline prices declined 7.65 cents from the prior month to 284.76 cents per gallon. The DOE index for gasoline prices rose slightly by 3.73 cents to 325.79 cents per gallon. The DOE wholesale spread increased substantially by 11.38 cents compared to the previous month. OPEC's decision around oil production led to mixed price movements for diesel and crude oil in the first half of the month. Most states increased their fuel taxes in July. Disruptions at two major oil terminals in Libya reduced production and put upward pressure on crude oil prices. Regional diesel price volatility was low with most states seeing changes within