To report suspected violators call MDT's
24-hour toll free tip line at:
|To report suspected
MDT's 24-hour toll free
tip line at:
Dyed diesel fuel is fuel that has not been taxed and is intended for off-road use only. When you fill your vehicle with undyed fuel at the pump, state and federal taxes are included in the cost. These taxes are used to help fund construction and maintenance of Montana's public roads.
Dyed diesel fuel is regular diesel fuel that has red dye added to it. This is done to identify the fuel as non-taxed and to help enforcement officials easily identify it. Dyed diesel is for off-road use only- examples include farm equipment and home heating.
If you fill your tank with dyed diesel and drive on Montana's public roads, you're breaking the law.
Using untaxed fuel (dyed diesel) in a licensed vehicle violates Montana's law and reduces the money available to build and maintain Montana state highways.
The penalties for using dyed fuel on public roads in Montana are:1st offense
Montana law requires the use of "dyed diesel decals" on retail pumps containing dyed diesel fuel, and this law is enforced.