what to expect for vinegar rust removal/treatment

[dmjlambert]

I put a couple of pieces of my truck in an inch or two of vinegar for a couple hours, removed them and used a toothbrush-style wire brush on them and rinsed them off. I can see there was a transformation and I see some areas of bare metal which flashes over with very thin rust as it dries. I have put some rusted things in vinegar before and wiped the rust off but these are a little crustier. I wouldn't call them extremely rusty and think they will easily last another 50 to 75 years if I give them a shot of rustoleum. If I repeat this treatment multiple times will it get down to pretty much bare metal, or is there a good-enough place were I call it done? My objective is to do some beautifying and protection of some pieces that are not out in plain sight on my truck as I encounter them, for example when I have the grill and headlight buckets out, treat them before putting back together. The outside of the truck is old and crusty and most likely I will just keep it that way.

I've had a weird experience with vinegar, not really sure if it was because I put chinesium in vinegar, but won't let the parts soak too long because I don't want to find out.