My neighbor bought a lift last year, and started doing this as a side business. He hosed down my coal stove with the stuff to try and slow the severe corrosion that had already started from sitting idle in my damp basement (coal ash + moisture = sulphuric acid). It smells nasty, but the stuff is GREAT. I highly recommend it. I prefer used motor oil because I'm a cheapskate - it's free but it's messy, and you have to check some areas where it will wash off over time. The Fluid Film seems to stick better.
Just got back from a 6 day excursion down to FL and back, hauling a '67 Belvedere down for my buddy. 1.5 days down, stayed 2 days, and 1.5 days back. Just got home a few hours ago. Had enough of the road to last a lifetime - 2 trips down there in 2 months, 1,380 miles one way. I don't envy you, Chevor! The Silverado didn't break, so I'm a happy man.
Got his giant 220v Ingersoll-Rand compressor into his garage from the front of his house using my trailer, then offloaded the Belvedere into the garage. Wired the compressor in for him while I was there. FL is an interesting place, having lived in MA most of my life.