[travelin texans]

I'm with others about pouring af in the fw tank as you will NEVER drain it completely, it may quit run out but will still have up to several gallons in it due to it's shape & size.
If it were me finding out now, before a freeze, from the folks here that your af could be diluted I think I'd invest in a couple more gallons, blow out the lines again & pump straight from the af jug through the lines. A couple hours & a few bucks for more af now will be much cheaper come spring if it was too diluted to keep things from freezing.