Pricing for diesel exhaust fluid (DEF) followed slightly divergent paths between February and March this year, with DEF prices at the pump falling by a penny per gallon while bulk tote prices actually ...

This story appears in the Aug. 20 print edition of Transport Topics. The price of diesel exhaust fluid at the pump at U.S. truck stops dropped significantly in July, following a similar decline for ...

TORONTO, Ont. — Two more Canadian fueling stations have added diesel exhaust fluid (DEF) at the pump in September, according to the latest report from price referencing site DEF Tracker. Including the ...

The average price of U.S. diesel exhaust fluid rose 4 cents from September and October, to an average of $2.80 per gallon, reports DEF Tracker. This is the second highest average pump price in the ...