At the heart of the CPS's bullish oil demand outlook is a highly conservative assumption about the growth rate of EV sales, ...

Kohler still builds diesel engines, but under the name Rehlko, a brand formed after Platinum Equity helped establish Kohler ...

The president pardoned a Wyoming-based tuner who was found guilty of deleting emissions systems on diesel trucks.

Energy analysts and environmentalists say diesel generators are expensive, noisy, highly polluting and exempt from Clean Air ...

This article covers a developing – and complicated – area, and doesn't constitute legal advice. Please let us know if you've feedback or questions we've not answered below by emailing ...