Black motor oil usually means the oil is doing its job. Oil that looks like chocolate milk, however, points to serious problems.
Conventional motor oil helped doom German soldiers in the Battle of Stalingrad during World War II, intensifying efforts to find a better motor oil. Here’s the story of how synthetic oil came to be.
Diesel cetane indicates the combustion speed of diesel fuel. Higher cetane ratings lead to maximum engine power and efficiency.
Randy and Sydney Weaver, of Weaver Customs, keep raising the bar for show-stopping custom vehicles. Check out their latest build…and watch their story.
Diesel fuel gelling and frozen diesel can clog the fuel filter and leave you stranded. Learn why this happens and what to do to prevent it.
Your differential allows you to corner safely while putting maximum traction to the ground. Here’s how it works, and what kind of gear lube to use.
Oil analysis provides a glimpse inside your engine to gauge lubricant and component condition without so much as removing a bolt or bloodying a knuckle. Here’s how to do it.
You can use diesel oil in a gas engine provided the diesel oil meets the appropriate specifications and viscosity requirements of your engine.
Here are our 12 favorite builds from 2019 Ultimate Callout Challenge. Plus, Kenny Hauk shows off his 1947 Dodge Power Wagon.
ULSD can lead to diesel fuel pump and injector problems due to insufficient lubricity. Here’s what you can do about it.