Like the title says……
I got into a disagreement with my father-in-law over off-road/red diesel. He uses it is his farm equipment and also some diesel heaters. Anyway, I say that all red/off-road diesel is ULSD just like the on-road stuff, just has a red dye added to it. He says it is high sulfur diesel.
My argument is that they would have to have separate supply systems (piping, trucks, etc ) if this was true to ensure a truck that just carried high sulfur was not used to carry ULSD (cross-contamination of fuel) and so forth. Basically the cost and the logistics of keeping them separate would not be worth it and it is simply easier to make all diesel ULSD regardless if it is dyed or not.
Can anyone help solve this issue once and for all.

Thanks,

Glenn

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2012 Mercedes ML350 Bluetec 91K (hers)
2005 Corvette 55K (fun car)
2002 VW Jetta TDI 231K (mine)
1998 Volvo S70 T5 Turbo 196K (kids)
1994 Ford F150 4WD 249K (firewood hauler)
1983 Mercedes 300D 376K (diesel commuter)