Walmart fleet rolling out ‘cleanest combustion engine in the world’

May 12, 2021

At a time when heavy-duty internal combustion is frequently castigated in the shadow of zero-emission all-electric and fuel cell powertrains, a leading non-profit clean transportation group is lavishing praise on an oil burner that has shown the ability to meet the nation’s toughest emissions standards six years ahead of schedule.

Emissions-minded CALSTART, based in Southern California with locations in Colorado, Florida, Michigan and New York, recently heralded the impressive emissions gains of a 10.6-liter opposed-piston engine from Achates Power, which will soon hit the road in a Walmart fleet truck.