# Downstream Bottlenecks in the Oil Supply Chain Are Contributing to Historically High Refinery Margins and Fuel Prices

> The Federal Reserve Bank of Kansas City says supply shocks from the Iran conflict and the Russia-Ukraine war, plus depleted inventories, are creating refinery bottlenecks. It reports diesel wholesale prices up about 93% and gasoline up about 75% since the Iran conflict began, versus about 63% for crude.

- Date: 2026-11-05 · published 2026-11-05T21:07:34.882Z
- Category: macro · region US · magnitude medium
- Page: https://feedsoft.ai/events/82392-downstream-bottlenecks-in-the-oil-supply-chain-are-contributing-to-historically
- Commodities: [ULSD / Diesel](https://feedsoft.ai/c/DIESEL.md), [Crude Oil (WTI)](https://feedsoft.ai/c/WTI.md)

## Why it matters

Refining constraints widen the gap between crude and fuel prices, which raises diesel and transport costs for feed supply chains even if crude eases.

## Read by commodity

- WTI: bullish ▲
- DIESEL: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| DIESEL | 2024-12-12 | [Global diesel prices to rely on refinery closures for support in 2025](https://feedsoft.ai/events/27158-global-diesel-prices-to-rely-on-refinery-closures-for-support-in-2025.md) | +1.1% | +12.9% |
| DIESEL | 2020-11-09 | [Oil prices are surging on hopes that a vaccine will end lockdowns \| Fortune](https://feedsoft.ai/events/11797-oil-prices-are-surging-on-hopes-that-a-vaccine-will-end-lockdowns-fortune.md) | +5.1% | +22.2% |
| DIESEL | 2026-09-28 | [Oil Market Split Shows Why Fuel Shortages Are Outpacing Crude Supply \| Investing.com PH](https://feedsoft.ai/events/17634-oil-market-split-shows-why-fuel-shortages-are-outpacing-crude-supply-investing.md) | -4.7% | +5.3% |
| DIESEL | 2020-12-23 | [Freight boom fuels shipping and oil prices](https://feedsoft.ai/events/49840-freight-boom-fuels-shipping-and-oil-prices.md) | +1.5% | +7.6% |
| DIESEL | 2020-05-27 | [Diesel stops 19-week slide after fleets contend with historic low oil prices \| Trucking Dive](https://feedsoft.ai/events/53315-diesel-stops-19-week-slide-after-fleets-contend-with-historic-low-oil-prices.md) | +9.1% | +24.1% |
| WTI | 2026-09-17 | [Investors are increasing their bets on the Thai baht weakening to its highest level in two months, affected by high oil prices and a stronger dollar. - Money & Banking Magazine](https://feedsoft.ai/events/17735-investors-are-increasing-their-bets-on-the-thai-baht-weakening-to-its-highest.md) | -9.9% | -7.1% |
| WTI | 2019-01-14 | [The Week Ahead: Will the ringgit and oil prices continue to do well this week? \| KLSE Screener](https://feedsoft.ai/events/61350-the-week-ahead-will-the-ringgit-and-oil-prices-continue-to-do-well-this-week.md) | +4.2% | +2.4% |
| WTI | 2026-03-06 | [Palm oil prices rise 4% as higher energy costs lift biofuel spread margins \| S&P Global](https://feedsoft.ai/events/20269-palm-oil-prices-rise-4-as-higher-energy-costs-lift-biofuel-spread-margins-s-and.md) | +18.2% | +39.2% |

## Sources

- kansascityfed.org: https://www.kansascityfed.org/research/economic-bulletin/downstream-bottlenecks-in-the-oil-supply-chain-are-contributing-to-historically-high-refinery-margins-and-fuel-prices/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.