i ordered a case of 51515's on 11/5/21 last year.
it was shipped the same day, and i got the order several days later.
i realize the shipping snafu's prevalent today, [my wife is still waiting for an order from bed bath and beyond, placed in january, and is ready to cancel] but i don't know what to think now about filter 1.
the filters i ordered fit everything here. we don't drive much anymore, so a case will last a long time, changing oil at 2500 miles.