If that's moisture coming out of your exhaust and if you even have a problem it's probably in the intake. You're getting it out of both banks, cracked block, head, or gasket wouldn't do that unless you ruined both sides which isn't likely.
Keep in mind though that moisture coming out of the exhaust isn't uncommon nor indicative of a problem unless it is in excess and your radiator level is dropping.
I guess the video is a little dark, but most of those spots is oil. The PO said the truck hadn't been run much in the last year or more - could this much just be seepage from sitting so long?
Also, how could oil get in the intake? Not arguing here, just new to engines.
After watching the video, I don't think you have a problem.
If it were a blown head gasket, cracked block or cracked head, it would be smoking a lot more than it is.
Since you say it hasn't been run much in the last year, the first thing I would do is DRIVE IT!!
Once it gets warm, get into the throttle pretty hard and watch in the rear view mirror for a lot of smoke. Then, back out of it, and see if you have any smoke. By the way, nighttime is the best time to see it, with a car's headlights behind you.
You may find that everything clears right up!!
Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???
That's not an oil leakThat's SWEATfrom all thatHORSEPOWER!!