RE:RE:Something to Think About....All of the manufacturers have and will continue to improve fuel efficiency, just not using dynaCERT's Widgets.
As for the "still old engines around" comment, this is the same logic that dynaCERT has been using since the early Jetstar days when the only engine they could even come close to running on was the Detroit Diesel Series 60. And when they went end of life, DYA's claim to fame was rebuilt versions of that engine used on Gliders......
DYA is using test results that are no longer relevant. And ask yourself this one final question......
Why is it that dynaCERT never advertised the number of miles its customers have on any of their trucks equipped with the Widget?
Why not the same for any of it's mining equipment customers?