Dyed Diesel Use
When you fill your vehicle with fuel at the gas station, state and federal taxes are included in the cost. These taxes are used to help fund construction and maintenance of Montana's public roads.
You may have also noticed the “Dyed Diesel” fuel amongst the options at the pump – but what is it?
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 meant for off-road use only. Examples include farm equipment and home heating.
Not only does using untaxed fuel (dyed diesel) in a licensed vehicle reduce the money available to build and maintain Montana state highways, but it violates Montana law. The 1st offense can cost you up to $1,000.