Every fleet strives to achieve two things when it comes to engines. The first is to maintain efficiency in order to reduce operating and service costs. The other is to ensure the longest possible ...

As record-high fuel costs threaten to annihilate even the most thoughtfully planned budgets, many fleets look for ways to reduce fuel consumption or cut other costs to compensate. Reducing idling does ...

A simplified rule of thumb is every mile per hour driven over 60 mph reduces fuel economy by one-tenth of a mile per gallon. A truck traveling at 65 mph will experience a fuel efficiency increase of ...

It's no secret that AWD and 4WD vehicles are best for the winter, but when it comes to diesel or gas engines, which is better ...

Mazda’s SKYACTIV-Z tech could change the way automakers and drivers look at gas-powered engines amid today’s significant EV investment push. Expert engineer Masahisa Yamakawa at Mazda said that heat ...

In the big scheme of things, gas-powered internal-combustion engines aren't all that efficient, as most of what they generate is waste heat. Toyota is believed to offer the most thermally efficient ...