At the October 4 morning session Brent printed $102.65/bbl and WTI sat at $91.50/bbl, driving the transatlantic spread to $11.15. The widening is one-sided: WTI fell $1.48 on the day while Brent added just $0.34. Cushing builds and Permian pipeline flows capped U.S. crude, while North Sea and Mediterranean spot held firm on refinery restocking.

For SNSUC's seven-product resale book — ESPO, Dubai, Oman, Urals, Basrah Light, Bonny Light and Lula — the read is mechanical. Quotations tied to Brent or Dated (Dubai, Oman and most ESPO cargoes) carry a higher landed RMB cost as the spread widens, while WTI-linked or U.S. Gulf fob grades like Lula and Bonny Light look comparatively cheap. A buyer switching benchmarks within the same day can capture a $2–3/bbl naked gap.

Our listing engine anchors quotes to live ticks through Brent × FX × 7.33 × grade factor. Each $1 of spread adds roughly ¥5.4/bbl to Mideast light listings at USD/CNY 6.705. Today's $11.15 spread puts the Mideast group about ¥81/bbl above the U.S.-linked group — enough to cover one STS transshipment charter.