For an engine to work, a fresh mixture of air and gas has to be able to enter and exit the cylinders. These induction and exhaust processes also need to occur at the correct moments, otherwise the ...

What are fuel additives? Do fuel additives really work? Fuel additives can clean fuel injectors, intake valves, pistons, and cylinder heads. What are the active ingredients, and how do they work? This ...

First it was a simple oil-cooler failure. A week later, Adam Metter noticed his ’97 Dodge Ram 3500’s 5.9L Cummins engine developed a knock, as the dualie pulled a heavy trailer over a mountain grade.