Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.

Diesel engines have powered everything from passenger cars to tractor-trailers. They're known for their reliability, fuel efficiency, and long life. Several motorcycle manufacturers have used diesel ...

While major motorcycle manufacturers produce a wide range of impressive mainstream bikes, the custom-built world of motorcycles is far stranger, with some examples that seem to break all the rules.