10k on my Ford Transit, with Mobil 1 EP 5w30. My 99 Mercedes gets Mobil 1 0w40 and goes anywhere from 5k to 18k and is changed every 12 to 18 months. The pickup gets Mobil 1 HM or Pennzoil Platinum 5w20 once per year, no matter the mileage, which is usually not a lot. The 08 Jeep goes 6k, which is usually about ever 6 months. It runs M1 HM 5w20 or 5w30. Finally, the 18 Jeep has had M1 AP 0w20 for the first few OCI's, the longest of which was 4k. It is at 5k on the latest change and I'm going to go the distance with the OLM, which is at 40%, so I'm guessing we'll get to somewhere around 7.5k.
I run Fram Ultraguards on all of them, including both cartridges and cans.