Fuel oil and bitumen rose together while natural rubber led a slide and butadiene rubber flattened; the book now runs two quoting formulas.

Fuel oil -1.79% and bitumen -0.88% break the daytime premium divergence; refiners tilt residue back to coking.

Fuel oil and bitumen rose while rubber held flat; the two chains run on different drivers, so the 13 categories split into a crude-crack line and a rubber-synthetic line.

Brent closed at $112.07 and WTI at $99.50, lifting feedstock cost nearly 3% on the day, while fuel oil rose just 2.4% and bitumen 0.53%; simple crack spreads narrowed and unhedged independents cut runs.

Fuel oil closed at 4,982 yuan per tonne, up 0.5%, and bitumen at 4,488 yuan, up 0.85% — both residue lines moved higher together, reversing the earlier "fuel oil strong, bitumen weak" split. Independents are reallocating residue between coking and bonded bunker blending, and the crack is widening.

On a day crude rallied, the heavy-product chain diverged on its own. Fuel oil reached 4,947 yuan/t while bitumen eased 0.36% to 4,454; refiners shunt residue toward bonded bunker and coking, reshuffling crack spreads and margins.

Fuel oil up 3.71%, bitumen off 0.36%; natural rubber down 0.08%, butadiene rubber down 0.25%. The two chains diverge and the crack spread widens at both ends.

Brent and WTI each fell $2.10, yet fuel oil rose 3.04% to ¥4,608/t while bitumen, natural rubber and butadiene rubber all dropped — refining cracks and rubber demand are on separate tracks.