The Strait of Hormuz closure has removed 20% of global Group III base oil capacity, sent crude surging to $130/bbl, and triggered the sharpest US wholesale price inflation since 2022, reshaping trade flows across Asia, Europe, and North America.
Base oils, the critical feedstock for engine oils, industrial lubricants, and specialty greases, are at the centre of one of the most severe supply disruptions in recent memory. In Q1–Q2 2026, the ongoing Middle East conflict and effective closure of the Strait of Hormuz have removed approximately 20% of global Group III base oil capacity, pushed Dated Brent crude to around $130 per barrel, and triggered the fastest wholesale price inflation in the US market since 2022.
The Middle East Supply Shock
The Strait of Hormuz closure since late February 2026 has been far more consequential for base oils than for crude alone. Key Group III facilities in Qatar, Abu Dhabi, and Bahrain have been damaged or taken offline, with output expected to remain curtailed for at least a year. Global oil supply plummeted by 10.1 mb/d in March, the largest disruption in the history of the global oil market. Luberef, one of the few Middle Eastern producers maintaining stable operations, cut its 2026 sales guidance from 1.25 to 1.15 million tonnes, yet confirmed it is selling all available output without demand resistance.
Asia Trade Flows Disrupted
South Korea’s base oil exports fell to a 19-month low of 276,500 tonnes in April, down sharply from approximately 390,000 tonnes in March. Taiwan simultaneously recorded a 19-month export low. With two of Asia’s principal Group II and Group III suppliers throttling down together, regional availability narrowed significantly. Southeast Asian markets were left underserved, with exports to Thailand and Singapore both declining to a 16-month low. Singapore has partially compensated, with four-week exports holding above 185,000 tonnes and imports surging to a four-year high, partly driven by European volumes heading east to cover Asian gaps, which simultaneously tightened European supply.
| Destination | April Volume | MoM Change | Significance |
| Total Exports | 276,500 MT | ↓ from ~390,000 MT in March | 19-month low |
| Japan | ↑ elevated (17-month high) | 5th consecutive YoY increase | Absorbing Middle East Group III shortfall |
| Southeast Asia | 16-month low | Thailand & Singapore slumped | Tightened spot availability |
| NE Asia share of total | 27.5% of exports | Highest since end-2023 | Regional supply re-concentration |
Source: Korea Customs Service / Price-Watch™ Asia Base Oil Trade Tracker, May 2026
US Experiences Sharpest Price Inflation Since 2022
The US base oil Producer Price Index rose 7.8% month-on-month in April 2026, more than five times the broader US PPI increase of 1.4%. Group II base oil prices surged over 50% in April versus March, with gains extending into May. With roughly half of US Group III imports sourced from the Middle East, the Hormuz disruption has directly severed a critical supply link.
| US Base Oil & Lubricants PPI — April 2026 Snapshot | |||
| Index / Category | Apr 2026 MoM Change | Last Comparable Surge | Context |
| Base Oils PPI | +7.8% MoM | June 2022 | 5.6x broader PPI rate |
| Lubricants PPI | +2.2% MoM | September 2022 | Lagging feedstock — more rises ahead |
| Overall US PPI | +1.4% MoM | — | Benchmark for comparison |
| Group II Prices (Apr vs Mar) | >+50% | — | Gains extending into May 2026 |
| Dated Brent Crude | ~$130/bbl | — | Well above futures benchmarks |
Source: US Bureau of Labor Statistics / Price-Watch™ North America Base Oil Price Index, May 2026
What comes next
Group III availability will remain constrained for at least 12 months given physical damage to Middle Eastern assets. Even if the Strait reopens, supply tightness is projected to persist for at least three months beyond any resolution as tanker, insurance, and refinery supply chains recover sequentially. Global oil inventories drew by 129 mb in March and a further 117 mb in April 2026, a record pace, with the IEA projecting the market remains in deficit until Q4 2026. In a cycle defined by supply geography and geopolitical duration, real-time price intelligence has never been more essential.