Tag: Cummins 12 Valve Maintenance

Owning a Dodge Ram with the legendary 5.9L 12-valve Cummins is a point of pride for many diesel enthusiasts. However, even this bulletproof engine suffers from one common weakness: the factory oil filtration system leaves microscopic contaminants circulating in your crankcase. If you are looking to extend the life of your bearings and turbocharger, learning…