The Energy Information Administration publishes its weekly retail fuel survey on Tuesday. One number decides which of two incompatible readings of the energy market is right.
The argument now dividing energy investors is simple to state and hard to resolve. Either the record distillate market is a structural shortage produced by lost refining and export capacity, in which case crude diplomacy does nothing to it, or it is a war premium that unwinds as fast as the crude premium did.
Monday produced evidence for both. Crude fell more than 4%, with WTI settling at $91.98 and Brent at $100.09. Refining equities fell harder than the integrated oil producers, which is what you would expect if the market believed the margin was about to compress. But the underlying fuel data has moved in one direction for three straight weeks.
What the series shows going in
The EIA on-highway diesel average has printed $5.599, then $5.967, then $6.285 a gallon across the three most recent survey weeks, the last covering the week ended . That is a gain of 68.6 cents in a fortnight. Gasoline over the same final week averaged $4.319, leaving diesel $1.966 a gallon more expensive, and diesel's year-on-year increase of $2.546 is more than twice gasoline's $1.151.
Regionally the dispersion is wide. California diesel averaged $8.039 a gallon and West Coast diesel $7.250, against $6.027 on the Gulf Coast, where refining capacity is concentrated.
What each outcome would mean
A fourth consecutive weekly increase, particularly one of comparable size to the last two, would be difficult to reconcile with the idea that the distillate market trades on the same geopolitical risk premium that left crude on Monday. It would argue that the binding constraint is physical refining and export capacity and that the inflation impulse running through freight, agriculture and goods prices persists regardless of where the barrel trades.
A flat or lower print would be the first genuine evidence for the refiners' implied view. It would not settle the question on its own, because retail fuel prices lag wholesale moves by days to weeks, but it would establish that the series can turn.
The survey covers the week ended and therefore captures only the very start of Monday's crude decline, which is the main reason a single print cannot fully resolve the debate.
The second number
The EIA Weekly Petroleum Status Report follows on or about Wednesday, , carrying distillate inventories. Those are the figures that speak directly to physical tightness rather than to retail pass-through. A distillate build alongside a softening retail average would be the strongest combination available this week for the war-premium case. A draw alongside another retail increase would be the strongest available for the structural case.
Refining equities, which sold off sharply Monday, are the most direct expression of the outcome.