On 4 November, Brent settled at $103.174/bbl, down 1.52% on the day; WTI settled at $95.734/bbl, down 0.75%. Both benchmarks fell, yet Brent's loss was roughly double WTI's — funds cut longs harder on the Brent side while U.S. physical discounts have not yet followed the paper break.

The Brent–WTI spread thus narrowed to $7.44/bbl, a clear pullback from the double-digit gaps above $11 seen in late October. A tighter spread compresses the Atlantic arbitrage: once freight plus quality differentials are added, WTI's landed advantage over Brent shrinks, and traders shift part of their term volumes from the U.S. Gulf back to direct Middle East liftings.

Applying the onshore listing basis — Brent times the USD/CNY rate (6.6711) times 7.33 times grade — at a base coefficient of 1.0 gives a landed cost near ¥5,044/t, roughly ¥500 below the October peak. The seven transfer grades (ESPO, Dubai, Oman, Urals, Basrah Light, Bonny Light, Lula) each carry their own coefficient, so every quote sheet must be repriced per grade.

Operating takeaway: when the spread tightens, do not lock December cargoes on the old arbitrage assumption. The lower basis pulls down crack expectations for downstream fuel oil and bitumen, but WTI's resilience means U.S.-origin cargoes keep a relatively firmer landed-cost edge — roll the U.S. Gulf–Asia leg first.