US diesel refining margin (diesel crack spread) has surged above $100/bbl, a
record level amid tightening global fuel production. The diesel crack hovered
around $100/bbl on Tuesday, slightly below a prior peak above $102/bbl; it first
closed above $100/bbl on Monday. Before this year the metric had never exceeded
$89/bbl; the previous record was set in October 2022 during a diesel shortage
ahead of winter. A combination of factors has created a near "perfect storm"
pushing diesel prices higher and may lift winter heating costs and add renewed
inflationary pressure.