Diesel refining margins hit about $102/barrel on 17 August, nearly three times pre-war levels, because Hormuz shipping is restricted and Russian refineries are damaged by drone strikes. Russia has banned diesel and gas exports until January 2027, and China has also restricted exports. Oil prices are high but not at peak. For a Thai SME that runs diesel trucks or generators, keep fuel budgets conservative and watch pump prices. Expect the pressure to persist into the high-demand season.