AXIOS (Ben Geman) - Why filling up the gas tank will soon get more expensive
Data: EIA ; Chart: Axios Visuals The cost to fill up your car will probably climb soon — and the oil price spike over Iran tensions is only one reason. Why it matters: Gasoline is the most visible energy expense for many people. That makes it politically important, too. - President Trump is fond of touting what are now pretty modest prices in much of the country. The big picture: Oil prices are jumping this week as traders digest the risk that a U.S. strike on Iran could disrupt supply. - That will eventually filter down to retail gasoline. The intrigue: Other, more mundane forces are also going to start putting upward pressure on gasoline, fuel market analysts say. - Refiners will soon start the switch to so-called summer blends,…