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Roush CleanTech

Roush CleanTech revealed that its 0.02 grams per brake horsepower-hour engine can operate on renewable propane. The company says it's the first available engine for renewable propane that brings emission levels to "near-zero" as defined by California Air Resources Board.

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Commentary: Why Not Propane?

Propane as a vehicle fuel doesn’t get enough love these days.It’s been around so long as an alternative fuel option that it just kind of sits in the background awaiting attention, and with the sudden interest in electric trucks, it may be destined to stay there. Commentary by Executive Contributing Editor Rolf Lockwood.