It was one long pour from a 5 quart jug. I think if I'd been pouring individual quarts it would have hit me sooner. I was also trying to rush, which is always bad for me. Live and learn.Run through flush!
It won't do much, but to keep it positive you did flush SOME old out (this has been hashed out in a thread)
OTOH you might actually be the first person who didn't figure it out during the first quart!! Wow.