Oil and Diesel Prices Spike as Saudi Pipeline Shuts and Hormuz Talks Stall

On Monday the 10‑year U.S. Treasury yield briefly nudged past the 5 % mark – a level we haven’t seen since 2023 – and the price of diesel crept up to a fresh record. The market’s jittery reaction has a lot to do with a sudden oil price surge, which itself was sparked by a hit on a key Saudi pipeline and a postponed meeting about the future of the Strait of Hormuz.

Brent crude jumped to just over $109 a barrel, while West Texas Intermediate flirted with $105. By the close of the session the rally had eased a touch – Brent finished at $105.68, up roughly 1 %, and U.S. crude settled at $101.39, a 1.3 % gain.

The East‑West Pipeline, which carries a hefty share of Saudi crude to the Red Sea, was shut “as a precautionary measure” after an attack that authorities say caused damage worth fixing. Saudi officials haven’t given a firm timetable, but U.S. Energy Secretary Chris Wright told Bloomberg that they expect a restart “very soon,” though the exact day remains unclear.

Compounding the uncertainty, a high‑level gathering of Iran and Gulf states meant to discuss the Strait of Hormuz was delayed. Oman’s foreign minister announced on X that the meeting was postponed “in the interests of consensus,” after Riyadh asked Tehran to hold off. The result? Ship traffic through Hormuz has dwindle to double‑digit numbers – 14 vessels on Sunday, 12 on Saturday – a stark contrast to pre‑war levels.

Higher oil prices ripple through the economy fast. The national average for regular unleaded gasoline rose to $4.31 per gallon, according to AAA, marking a 45 % climb since the start of the Iran‑Israel conflict. U.S. crude itself is up more than 50 % since February 28, and oil prices have risen over 80 % year‑to‑date.

But it’s diesel that’s grabbing economists’ attention. AAA reported the average diesel price hitting $6.23 per gallon, an all‑time high. Because diesel fuels trucks, trains, ships and even some farm equipment, its price hike is felt across the supply chain. “The cost of diesel gets into just about everything,” KPMG chief economist Diane Swonk told NBC News, warning that the surge could keep inflation elevated for months.

Even former President Donald Trump weighed in, urging Ukraine to curb attacks on Russian oil refineries, arguing that such strikes are unintentionally tightening global diesel supplies. “Don’t hit diesel fuel, because that’s hurting the world,” he said at the Irish Open.

Adding another layer, Russia has banned diesel exports – a ban set to run until the end of September but likely to be extended – after Ukrainian strikes on its refineries intensified. ING commodities analysts note that the combined effect of Middle‑East disruptions and Russian export curbs is squeezing the market, pushing diesel prices up about 30 % since late June.

All of this is feeding into bond markets. Longer‑term yields, like the 30‑year Treasury, rose above 5.37 %, their highest since 2007, and consumer borrowing costs – mortgages, car loans, you name it – tend to follow suit. With the Federal Reserve expected to raise rates again on Wednesday, the interplay between fuel prices, inflation and bond yields is set to stay front‑and‑center in the coming weeks.