Does Winco sell California Olive Ranch olive oil?

Yes the store does carry this item.

Yes, Beaverton WinCo does sell California Olive Ranch Olive Oil, destination series for everyday use. The only size carried is 500ml (16.9oz) at a cost of $8.36 as of January 23, 2019. This is currently a regular item and not be in and out, so it should be in stock all the time provided there's available supply.

Its hit or miss on certain brands and products? Also check grocery Outlet stores, they also have random brand products.

I have seen it in the past, but it is not always in stock. WinCo a lot of olive oil brands, including their own, which is the only brand I have seen every single time I shop there.