Their is less value with tbn now with our improvd low sulphuric gasoline and better base oils across the board. thr organic adds are also not readily visible, making VOA’s and PDS’s and SDS’s less valuable in comparing. I figure if they label it extended performance or 20 KOL they’ve done their research and they formulated it for the task. You can do a used oral analysis and if the vehicle is in the proper condition and has an appropriate sump capacity to run the interval it shouldn’t have a problem.