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.

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.