South Korea froze its 10th refinery supply-price cap at 1,784 won per liter for regular gasoline, 1,773 won for diesel and 1,380 won for kerosene for four weeks starting Saturday, as Middle East tensions kept WTI, Brent and Dubai crude above $100 a barrel. Fuel-tax reductions continue through Nov. 30. The government has allocated 4.2 trillion won this year and 1.4497 trillion won next year for refiner compensation, but most funds remain unexecuted because loss-calculation criteria are unresolved. The National Assembly Legislative Research Service said the cap’s effect on retail prices is difficult to verify because station inventories, procurement costs, distribution expenses and adjustment lags also affect prices.