For many years, the Mazda RX-8 has been the unloved member of the Mazda rotary family. At least compared to the RX-7, it ...

If you've ever wondered what a single-rotor rotary engine sounds like, here's one that makes 155 horsepower by Rob Dahm.

Record-breaking goal: Rob Dahm's 12-rotor engine aims to produce 5,000 HP, a figure rarely seen outside of drag racing or marine engines. Unique rotary design: The engine combines three four-rotor ...

Could there possibly be a rotary engine with 12 rotors? The answer is yes, and here's everything we know about it including ...

There have only been a handful of rotary engine-powered cars, and most of them start with "Mazda." While fascinating and not without their benefits, rotary engines are pretty inefficient, don't make a ...

Reports of the death of the internal combustion engine have been exaggerated. Electric vehicles were once poised to diminish the ubiquity of traditional engines, but automakers are booking huge losses ...

When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, the same basic principles of internal combustion apply here: Fuel and air are mixed and ...

PC-12 has been fully approved by API and will replace CK-4 and FA-4 engine oils starting in 2027. The new engine oil category includes FB-4 for lower-viscosity oils and CL-4 for higher-viscosity ...

Bill O'Ryan with the American Petroleum Institute updates trucking reporters at TMC on the new PC-12 heavy-duty engine oil category. After several years of development, we're nearing the finish line ...

The rotary was the most radical rethink of the combustion engine in over a hundred years — and it paid the price for being different. Mazda introduced the innovative Wankel rotary engine in the 1967 ...

Image Credit: Tronno at en.wikipedia, CC BY 3.0/Wiki Commons. Some concept cars are built to collect dust at auto shows and look pretty in press photos. The Mazda Furai? It was built to absolutely ...

PARIS, Feb 12 (Reuters) - French-US jet engine maker CFM is studying a more conventional "advanced ducted" engine design alongside its preferred option for a radical open-fan concept for future jets, ...