[BlueDragon]

Just don't let yourself be caught with dyed fuel in road vehicle tanks. (inspections along those lines are more frequent for commercial trucks, but still rare) Speaking of which, one needs an off-road tank for the tractors.

one could look it up, but if memory serves the fine can be as high as $2,500 per gallon, for dyed (off-road) fuel found in vehicles registered for road use.

[Boiling point]

We planned on filling it with un dyed diesel. We don’t use enough in the tractors to amount to much. There is however at least a ten cent per gallon or more under pump price for bulk delivery.