Brent fell to about US$105.69 a barrel and West Texas rose to about US$94.14 on 13 Oct 2026, as markets expect Russia to supply about 0.3 million tonnes of diesel to the US and allies in October. OPEC+ output rose about 0.9 million barrels a day in September, but shipping through the Strait of Hormuz remains constrained and Saudi-Yemen fighting is a live risk. Global diesel prices have hit record highs in recent weeks. For a Thai SME, keep fuel and logistics budgets conservative and avoid assuming near-term relief at the pump; review diesel-linked delivery costs and pricing clauses.