The oil system in your engine is crucial to the trucks performance and life. Keeping your oil clean is what it all comes down to. The Sinister oil filter kit is here to do just that. This adds the best oil filter available on the market with our parts to filter better than any other filter on the market. The more dirt and grime you can get out of the oil, the less wear and tear on the engines internals. So adding a second filtration system ensures that you get the grime and crud out at two points, rather than letting it circulate around the motor a few times, trickling through the bypass port before being trapped. In addition, the oil in your Power Stroke is also asked to work harder than standard motor oil. It acts as a lubricant, but is also used to cool the pistons and to drive the high-pressure fuel injection system. This means it also picks up more trash and also a lot of extra heat. A second filter helps keep the metal, carbon particles and other trash from causing premature wear of your 6.0L diesel. Another upside is it also acts as a minor oil cooler, as some heat is radiated off the filter and housing.