The world is changing, and drivers have found their attitudes changing somewhat, too. Perhaps you weren't very conscious of how much gas you were using but are leaning towards more environmentally ...

Mazda's 2019 SkyActiv-X engine may have cracked the HCCI engine challenge. It uses a spark plug to address typical HCCI problems but can also run on compression alone. These engines are 20–30% more ...

We may receive a commission on purchases made from links. While browsing auto repair and maintenance tools at your local parts store, you've likely come across compression testers like the Orion Motor ...