Maximum filtration performance for virtually all heavy-duty diesel and gasoline applications, including Class 6, 7 and 8 heavy-duty trucks, off-road equipment, buses, generators, marine engines, logging and agricultural equipment.
When I started using Amsoil products, I added dual filtration. Currently I have 241K on my 2002 Superduty Truck and I hope it continues its service to us for many more years to come. It keeps the oil cleaner longer and I am not worried about longer service intervals between changes after a number of oil analysis's have shown the oil is in good shape.
with the egr on these the oil is even dirtier than previous diesel engines w/o egr. not expecting the oil to look exactly like out of the bottle new, but I know this filter is catching the extra contaminants from the egr system.