Rodbuckler- I'd considered that, but I've seen how that stuff flows, and it's not quick...a 10W-30 HDEO like the Rotella T I can find around here at Menards, or a 5W-40 like the Rotella T "Synthetic" that can be found most anywhere, I would consider. The 15W-40, little too think I think...
Rand- I tighten about a turn and a half by hand, but usually have to use a wrench to break them loose.
427Z06- I'd consider putting in the Rotella because it's cheap, and the Redline since it would add polarity and a heap of an amount of Moly to the Rotella. I surely wouldn't keep adding it as the oil ran out.
Auto-RX needs time to work. If they drive 50 miles locally in a week, and they have to put in 3 quarts of oil, there's no way the Auto-RX is going to help in any meaningful way. I'll conceed the point though that if it really does leak that much (anyone's guess at this point, I couldn't start it last night), the quart of Redline wouldn't help either.
Gary Allan- It's an Aerostar, so basically it's very reliable but the body is rusted down by the door sills/rocker panels.
It's just in no way worth it to us to fix it, and even if the my cousins family wanted to fix it, you're right, they don't have the cash. Shame, because it's been an extremely reliable vehicle.
Chuck