Diesel engines, because they generate a considerable amount of soot, are hard on oil. If you aren’t accustomed to seeing how quickly oil turns black after being changed, you might be surprised by it.

Diesel engines are known for their reliability, but that's only if proper routine maintenance is provided to the drivetrain to keep it running clean.

A mechanic holding a new fuel filter for a diesel car - Yury Nikalayeu/Getty Images Most diesel engines have two fuel filters to protect fuel system components from dirt and contaminants. Diesel ...