I, myself, prefer, either Valvoline, Motorcraft, Quaker State, or Pennzoil to Castrol. However I have a mechanic, that I trust, who changes my oil with Castrol Synthetic Blend products, if I do not provide the oil and filter of my choice.
He will change my oil, and oil filter, in my Nissan truck, with the products I provide him for a small labor charge instead of changing the Nissan with Castrol which he recommends.
If I go with Castrol, again, I will have some fast lube place change the oil in my Nissan. It will be cheaper, supposedly. I don't like fast lube places because they don't seem to "listen to me" when I tell them, "Don't Mess with the Air Filter."
I think I will have to "Watch the Lube Place" to make sure they do not "mess" with my air filter.