The U.S. Environmental Protection Agency issued a guidance letter late last year to heavy-duty on-highway engine manufacturers outlining how it intends to determine the physical range of adjustment of diesel exhaust fluid quality for certification testing, according to DiscoverDEF.com.
It turning out that prices for diesel exhaust fluid are one of the few things in trucking that you can count on remaining nearly the same month after month.
The national average price of DEF at truck stops islands was $2.79 per gallon in the U.S., a decline of one-cent from the month before.
A new report shows pump prices for diesel exhaust fluid have remained stable for several months.
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