Yeah, that's a rough one. I had a similar situation with a basement that just wouldn't dry out no matter what I tried. Ended up spending like $40 on a cheap box fan from the hardware store and just pointed it at the damp corner for a week straight. Not fancy, but it actually moved enough air to stop the mold from getting worse. Sometimes the simple stuff beats the expensive gadgets.

Alternator bolts are usually 8mm not 10mm on Rangers.

I mean, I gotta push back a little on the "came out looking new" part. I've seen plenty of guys pull injectors out of an ultrasonic and they look clean but then still have issues with the internal clearances. The smoke clearing up could just be from the solvent breaking up the gunk on the outside, not actually fixing the spray pattern. Idk, maybe I've just had bad luck, but I had a set of injectors that looked perfect after a bath but still had a dead cylinder because the internal passages were still clogged. Brake cleaner and compressed air has never let me down for the price.

Man that sludge is nasty isn't it... did you notice any difference in how the engine ran after you cleaned it out?

Lucky you didn't tip, but one close call doesn't make it gospel.