WTI Surges 7% While RBOB Gasoline Drops 4% as Hormuz Stall Splits the Barrel
Distillates and crude moved higher on July 28 as Hormuz flows stuck at 5.1 million barrels daily, but RBOB gasoline fell hard on demand softness.
NYMEX WTI crude front-month surged 7.22% to $82.61 a barrel on July 28 (2026-07-28), a gain that sat uneasily alongside a 4.20% drop in NYMEX RBOB gasoline front-month to $3.19 a gallon in the same session. NYMEX heating oil front-month climbed 2.17% to $4.24 a gallon. The divergence — distillates holding firm while gasoline fell sharply — reflects a crude supply shock that is not flowing evenly through the barrel.5
ICE Brent crude front-month gained just 0.32% to $85.05 a barrel on July 28 (2026-07-28), a far more modest move than WTI, with the two benchmarks diverging on different Middle East supply exposures. WTI and heating oil moved in tandem. RBOB's 4.20% decline was the outlier, suggesting the gasoline market is pricing demand softness as sustained high pump prices reduce consumer throughput, even as distillate demand holds.5
A J.P. Morgan commodities research note sent to Rigzone on Friday (2026-07-17) explained the floor under crude. The bank said a Hormuz traffic recovery that began in early June had "abruptly stalled," with confirmed flows through the Strait falling to just 5.1 million barrels per day. That level keeps feedstock availability constrained for refiners dependent on Middle Eastern crudes even as diplomatic talks continue in the background.5
The same J.P. Morgan note flagged a mixed demand signal from that Friday's (2026-07-17) U.S. data: preliminary consumer sentiment rose to 54.4 from 49.5, with current conditions increasing to 54.9 from 47.7. An improving sentiment reading ordinarily supports gasoline consumption. But July 28's (2026-07-28) RBOB move suggests traders are weighing whether that improvement is durable enough to offset the price destruction already embedded in retail pump markets.5
Goldman Sachs, in forecasts cited by Reuters during the week of June 1 (2026-06-01), estimated that global exports of refined petroleum products are down by 4 million barrels daily from pre-war levels, with Middle East output alone down 2.5 million barrels daily. The bank said refining margins were running two to three times above their 2013-to-2019 average, with diesel margins seen between $19 and $26 a barrel above pre-March levels. Goldman projected that gasoline and diesel stocks would continue declining even in an initial Hormuz reopening phase, as demand would recover faster than supply could be rebuilt.2
Russia's diesel export ban has added a separate constraint on the distillate side. Reuters estimated that Russian diesel output fell 10% in May (2026-05), following a 10% drop in April (2026-04), after attacks on refining infrastructure. Sequential declines of that scale remove a barrel stream that European markets had relied on before sanctions and wartime damage eroded it.2
Refining margins had already been running at extremes before July 28's (2026-07-28) session. During the week of July 6 (2026-07-06), gasoline and diesel margins hit new record highs, OilPrice.com reported, following Middle East re-escalation, Russia's diesel ban, and declining global fuel inventories. Sparta analysts quoted in the same report were direct: "Russian barrels are gone, China's export floodgates are uncertain, and Middle East re-escalation adds fresh risk."3
Earlier inventory data showed how quickly the physical market can tighten. During the week of May 11 (2026-05-11), total U.S. stocks of crude and petroleum products including the Strategic Petroleum Reserve fell roughly 24.1 million barrels, one of the five largest weekly declines on record, according to EIA data cited by Wood Mackenzie. U.S. crude and product exports hit a record 14.2 million barrels per day that same week, 33% above the equivalent week in 2025, sending barrels outward even as domestic inventories dropped sharply.1
The EIA's quarterly review, published July 15 (2026-07-15), confirmed that continued Hormuz disruptions drove higher and more volatile crude prices through most of the second quarter, with reductions in product flows compressing middle distillate availability in Asian and European markets dependent on Gulf refinery output.4
With J.P. Morgan's mid-July (2026-07-17) data showing Hormuz flows stuck at 5.1 million barrels per day and no recovery trend apparent, Goldman's forecast of further stock declines during any reopening phase remains intact. The RBOB softness on July 28 (2026-07-28) is the demand side speaking. If gasoline consumption weakens before inventories tighten further, the bullish product margin story falls to diesel and heating oil to carry — and whether distillate demand holds at current margin levels as the broader economy absorbs fuel costs is the signal traders will be watching from here.2,5