Extended Drain in the USA?

[WS6]

Purolator (you know, pure oil now or pure oil later)

That brand is not available in my locale, no one carries it. Wix is in all parts stores along with their house brands, NAPA, CarQuest, Parts Master etc.

[Rockrz]

Well, I got my newer type pickup I had before with about 75k on it and I'm now running Amsoil Ea filters changed every 5k, with oil and filter both changed at 10k

Eventually, I'll send a sample in for testing to see how this schedule is working out.
I figure it's Amsoil products, so I should be fine.