well getting that tbn and hearing what they say might have some value of extended it if needed. I mean even conservatively you can go 5k miles on that if you want. If this was your first redline run, not a bad move, but really now 5k will serve anyone well. They have other measures then just tbn to help with a conservative interval, you wont have any oil shear, insolubles, water, silicone (from dirt), or heavy wear numbers by themselves create a condition where you want new oil. If you are absent all of this, why change it early? It's like throwing away money. If you feel so motivated, next time add TAN, really will tell a complete story. Especially with that filter, you are well covered.