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Jun 8, 2017, 6:00 am175 ptsGreen Car Congress
ROUSH CleanTech has developed the first propane autogas engine available in class 4-7 vehicles and Blue Bird Type C buses certified to the optional low NOx level .05 g/bhp-hr. These new Environmental Protection Agency- and California Air Resources Board-certified propane engines are 75% cleaner than the current…
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