Crude tops $100 as US-Iran tanker war escalates and diesel cracks set a record
Brent crude is trading at $101.04 and WTI at $96.09 after the fight in the Persian Gulf and Gulf of Oman got worse this week. The US said it hit ten Iranian tankers. Iran reported strikes on US warships and tankers. Crude has held above $100 since Wednesday, and OilPrice reports tanker traffic through the Strait of Hormuz has dropped off after months of moving at higher-than-spring rates. The barrels exist. Getting them out is the problem.
Diesel cracks
Diesel is the part that hits your buyers now. RBN says the diesel crack pushed above $100 a barrel to a record. The benchmark 3-2-1 crack rose just $0.52 last week to $66.36, so the headline number barely moved, but the mix underneath shifted hard toward distillate. For haulers and anyone buying diesel by the load, that spread shows up at the rack before crude does.
Russian refining offline
Two things are pulling refined product out of the global pool at once. Russia's Ryazan refinery, around 350,000 barrels a day, has been idle since a September 6 drone attack, sources told Newsquawk. Zelenskyy says Ukrainian forces hit eight facilities in the past day, including a refinery in the Yamalo-Nenets region and a port in Dagestan. Less Russian crude and product moving means more competition for every barrel that clears, and diesel is the tightest end of that barrel right now.
Reroutes and the Saudi tell
Oil tanker rates are at record highs as operators take longer, more expensive routes to avoid the Gulf. Refiners are moving with them. Aster has shifted crude buying to the Americas and Africa to get around the Middle East disruption. Watch the official selling prices too: Oman set its November OSP at $119.30 a barrel, up from $87.84 in October. That is a $31 jump in one month and a straight read on how tight sellers think the market is. The EIA has raised its oil price forecasts on the supply risk.
For US operators, none of this needs a tanker to actually sink. The insurance and routing costs are already in the price, and diesel margins are carrying the load.
What to watch
Whether Hormuz traffic keeps falling or steadies. If tankers keep moving at even a reduced rate, crude could ease off $100. If the strait tightens further, the diesel crack has room to stay where it is. Watch how fast Ryazan comes back and whether the drone strikes keep hitting refineries rather than storage. And watch the next round of OSPs. If other Gulf producers follow Oman's jump, that is more cost coming down the chain toward the rack.