Join Date: Sep 2009
Location: Door County, Wisconsin
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I'm quite sure by now, most fuel available both on road and off road is the ultra low sulfur kind.
Although diesel fuel can be stored indefinitely, there may be some of the older fuel available in certain areas, and marketed in the off road segment, as emission standards are currently affecting on-road vehicles.
Yes, the older stuff will provide a little more energy, as BTU content is robbed during refining of the ULSD. The new stuff is also drier, and may require a lubricity additive in older equipment.
The basic, only difference between the two is the red dye added to off-road indicating no road tax, and green dye to the on-road for tax paid. If operating your vehicle on public roads or highways with red dyed fuel, you may risk being fined for tax evasion.
'98.5 2500 Clubcab Short box 24v 4X4 5speed