tried search, didn't come up with anything. '17 3500 Mega 4x4. Looking for info on oil filters, which one filters best. Last two oil/filter changes have been Stratapore 035/T-6. Oil is extremely black, appears like high soot. Question - Can you tell if the filter is plugging up? I change filters and oil at about the 6k-7k mark. Dash gauge says I can go much longer. Just for my own peace of mind, I would like to get more info on oil filter performance. Can anyone point me to some tech info on filters? Much appreciated!