Angus that's a valid concern. I was told that it was leagle as a pull behind trailer, and I didn't mean to sugest to anyone here do anything illeagle. I think I will check with the Airman manufacturer first as Jim says to see if it is suitable. I don't want to void a warantee or worse to save $two bucks. I guess I could calll the state police just to be sure that it is leagle either way. I will report the answer I get for both points.
"Dyed diesel fuel is intended to be utilized in an off-highway capacity such as agriculture, construction, or logging."
Angus this is from the article you linked. I'm pretty sure we are considered "construction"
It does also state a a fine of $100. and not more than $500. , not $10,000 , just to say. But I thank you for voicing your concerns.
BB, I wasn't using that link for anything you said. That was directed towards nlgutters. He said DOT never checks in his state. I was just informing him otherwise.
As for the fines, I have heard they can be as high as $10k. I drive a diesel vehicle so I am a regular on some diesel-rated forums. Now don't forget, the state may fine you (up to $500 in the case of NH) but the IRS will
also fine you since running dyed diesel on-road is tax evasion. That fine is the
greater of $1,000 or $10 per gallon of the dyed diesel fuel involved. After the first violation, $1,000 portion of the penalty increases depending on the number of violations.
As for off road being different, technically no. It is just dyed so DOT can check. However, not many off road use vehicles, farm or construction have the same emissions as pickups. Especially if you have an '08 or newer vehicle, it must run ULSD. Off road diesel might not be. Also, regular diesel may contain additives for things like keeping injectors clean or anti-gel in winter months that might not be in dyed diesel.
Bottom line, if your
vehicle is
licensed to drive on
public roads, you
can get dipped and if so, you will get fined. You will get a citation from the State and will be reported to IRS. I have read reports of the state fines (CA) being as high as $10k. That's not worth it to me. It's illegal to do this. It's tax evasion.
I have gotten dipped 3 times you know how many diesel's I have ZERO It was in an old I-6 ford dump truck. They inpounded the damn truck because the windshield was cracked and wipers didn't work. 
