Most semi-trucks in the U.S. still have unsynchronized transmissions, even though they're harder to use. But why is this old-school tech still popular?

New state-of-the-art shift synchronizers are said to reduce fuel consumption and improve gear shifting ease for 9-spd. and 14-spd. gearboxes. The synchronizer, from Oerlikon Graziano, is being offered ...

(Editor's note: Author Michael Czap submitted this story to MM&F, in the hope that his insights on the popular T-5 transmission would be of some benefit our readers. We also consulted with Tremec to ...

Manual transmissions are, on paper, simpler than the automated transmissions present in many modern cars. Does this ...