REFINERY MARGIN TRACKER: Global refinery margins slip on diesel stock overhangs By admin Posted September 28, 2020 In In the News REFINERY MARGIN TRACKER: Global refinery margins slip on diesel stock overhangs2020-09-282020-09-28/wp-content/uploads/liberty-petroleum-icon-logo2.pngLiberty Petroleum Corp/wp-content/uploads/liberty-petroleum-icon-logo2.png200px200px Worldwide refinery margins softened last week as the overhang of diesel stocks is seen weighing…