Can You Put Red Diesel in Your Pickup Now? What the New Order Actually Does

For the rest of 2026, Washington says it won't penalize you for running red, off-road diesel in a highway vehicle. That doesn't mean the tax is gone or that your state agrees. Here's what the October 5 executive order changes for owners of Duramax, Cummins, and Power Stroke pickups.

AAA's national average for diesel was $6.301 a gallon on October 7, against $4.366 for regular, a 1.44 ratio that drives the break-even math in our gas vs. diesel heavy-duty truck cost breakdown. AAA's all-time diesel high, $6.528, was set on September 22.

Red diesel is the same fuel with a different tax bill

Dyed diesel isn't a different product. The law taxes diesel by how it's used: highway fuel carries federal and state excise taxes, while fuel for farming, construction, or heating does not. The red dye is there so inspectors can tell the two apart, according to the White House fact sheet on the order.

The federal highway rate is 24.4 cents a gallon, as the IRS noted in a 2021 dyed-fuel relief notice. Get caught with dyed fuel in a highway vehicle outside a relief window, and the IRS penalty is $1,000 or $10 per gallon, whichever is greater, plus the tax.

What the order does, and what it doesn't

The text of the order covers fuel sold or used from October 5 through December 31, 2026. It does four things:

• Penalty relief. Within five days, Treasury must direct the IRS to announce it won't impose the dyed-fuel penalty when red diesel is sold for highway use or burned on the highway during that window.
• A deferral, not a repeal. Treasury must decide whether a disaster-relief provision of the tax code, section 7508A, covers this situation. Only if it does will the federal tax on that fuel be deferred, without interest or penalties.
• Possible forgiveness, later. Treasury is told to explore ways, including legislation, to cancel the deferred tax. Nothing has been forgiven yet.
• States are encouraged, not bound. Federal agencies are to work with states and urge them to follow suit.

The fact sheet describes the deferral as a done deal. The order itself makes it conditional on Treasury's legal finding, and the order is the document that counts.

So can you fill your HD pickup with red diesel today?

Federally, the penalty risk switches off once the IRS makes its announcement. When we checked on October 7, neither Treasury nor the IRS had published guidance. The Energy Marketers of America told members that whether relief applies, to whom, and on what terms depends on that guidance, NBC News reported.

Even with the IRS on board, three practical hurdles remain:

• Your state. An executive order can't override state tax law. State diesel taxes average about 35.5 cents a gallon. CNN, citing a ClearView Energy Partners tally, reported that about 10 states, including Texas, Oklahoma, North Carolina, and Alabama, moved to widen dyed-diesel access between September 23 and October 2; terms range from farm-only use to paused enforcement. Check with your state revenue department first.
• Finding it. Most truck stops don't stock red diesel, Transport Topics reports, and the truck stop and gasoline marketer trade groups NATSO and SIGMA told members they don't expect most reputable retailers to sell it for highway use.
• The right grade. "Dyed diesel" also covers heating fuel. The IRS has said diesel with more than 15 parts per million of sulfur may not be used in highway vehicles, and fuel marketers note the order doesn't resolve EPA restrictions. If you use dyed fuel at all, confirm it's 15-ppm ultra-low-sulfur diesel.

What happens on January 1

The penalty window closes December 31. A deferred tax is still a tax: the order requires Treasury's guidance to set a date by which postponed taxes must be paid. Unless Treasury finds a way to cancel them or Congress acts, someone will owe 24.4 cents on every gallon.

Who that someone is will be settled in the guidance, which must name covered taxpayers. NATSO told Roll Call the tax would remain an obligation even though it isn't collected from the customer, which is one reason retailers are wary. If you fill from a dyed tank on your own property, assume the bill could land with you, and keep records of dates and gallons.

NATSO and SIGMA also warn that dye lingers in tanks and fuel systems. The order doesn't say how inspectors will treat red traces after December 31, so run any dyed fuel out before the window ends.

How much would you actually save?

On the federal side, 24.4 cents a gallon works out to $7.32 on a 30-gallon fill, and that money is deferred, not saved, unless it's later forgiven. If your state also waives its tax, the national average combined rate of 59.9 cents comes to about $18 per 30 gallons.

The White House says the order saves truckers over $100 per refill. At 59.9 cents a gallon, that takes roughly 167 gallons, a semi-truck fill, and it holds only if your state drops its tax too. For a pickup owner, the realistic number is $7 to $18 a tank, assuming you can find dyed fuel priced below clear.

What we don't know yet

• Whether Treasury finds it has authority under section 7508A. The order gives it five days, which points to about October 10.
• How the IRS will run the program: who documents what, how deferred tax gets reported, and when it's due.
• How the IRS will handle fuel-tank inspections during the window. The order requires a public announcement on that.
• Which states will match the federal move. State taxes go away only by state action.
• Whether the deferred tax is ever forgiven. Only Congress can eliminate a tax, and Treasury has only been told to explore options.

The bottom line for truck owners

Red diesel isn't a free pass yet. Wait for the IRS announcement and your state's rules, buy only ultra-low-sulfur dyed fuel, keep receipts, and be back on clear diesel by New Year's. For diesel truck shoppers, a three-month window doesn't change the long-term math; the bigger questions are still how the Silverado HD stacks up against the Super Duty and what GM's new 8.3L Duramax brings against Ford and Ram.