Has anyone been able to buy gas without paying the road tax?
With Diesel you can buy fuel without the tax and you aren't paying road tax on Propane.
Farmers are able to buy fuel that isn't taxed.
Your local distributer can sell gas or deisel without road tax. It is dyed (well the deisel is for sure). If you ever get your tank dipped by your state and they find dye it is thousands in fines.
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Provided you can account for your consumption of fuel for a non-road application, you can receive back all taxes, state and federal on your tax return. For our customers, we make the relevant schedule tax forms available.