Trump temporarily expands use of red-dyed diesel. Will it lower costs?

What happened: President Trump signed an executive order temporarily allowing red-dyed diesel, normally restricted to off-road use, on highways. It defers the federal excise tax for the remainder of 2026. Key numbers: Federal diesel tax is 24.4 cents a gallon. Why it matters: Experts including GasBuddy's Patrick De Haan and Gulf Oil's Tom Kloza are skeptical of broad savings, citing state bans, possible deferred tax bills, and no change to supply. De Haan warned lower prices without more supply could raise demand and costs.

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