How diesel engines work, how to maintain them, and how to diagnose common problems.
Exhaust smoke is a diesel's way of telling you what is wrong. Learn what black, white and blue or gray smoke point to, what to check first, and when to stop driving.
Read GuideSpark versus compression, torque versus revs, fuel economy versus price. How gasoline and diesel engines differ in practice and which one belongs in which…
Why diesels struggle in the cold, and the fixes that work: winter-blend fuel and anti-gel, block heaters, glow plugs, batteries, oil and what to…
What diesel engines need and when: daily checks, oil and filters, fuel system care, coolant testing, emissions equipment and records, for trucks and off-road…
