What part of the world?

Every 5k-6k regardless of time. I usually hit that mileage at 4-6 months though.

I sent my oil into Blackstone last oil change. They told me the oil still looked good and xould probably go longer. I’m usually running Mobil 1 or Pennzoil “high mileage” which ever is on sale or cheaper. Both state you can go upwards of 10k miles.