The minimum fuel saving of 3%, says Fersa, adds up. Assuming 150,000 km (93,200 miles) per truck per year, a baseline fuel total is around 60,000 liters (13,200 gal) of diesel.

Germany’s Environment Agency warned the incoming government against tossing out a ban on fossil-fuel heating systems, with the nation poised to narrowly miss its 2030 climate targets in the ...

“You literally just heat the oil up and then look to see when it starts to smoke. It’s amazing how much weight we put on such a crude and unreliable method.” In one study, scientists heated ...