IIRC, molasses can be "sped up" by electrolysis, but, I just use Fertan, its easier, cheaper, and a lot less mess IME.
I like Fertan - I've used it before - but it doesn't do the same thing this Rustyco stuff does. (I think Evaporust does the same thing as Rustyco and that seems to be easier to get in the UK). The Fertan does a great job eating the surface rust but doesn't seem to do as well removing it completely like this Rustyco can. With the Fertan you get a dark blue layer of staining. Rustyco you can eventually get clean steel.
The next stage in the "Fertan system" is "Ferpox" which is a really nice epoxy undercoat. I de-rusted the entire suspension of my Mercedes 190 and sprayed it with that stuff. I'm very happy with this Ferpox product and have bought some to use on this Land Rover of mine.
Couple of things..
Molasses does work on rust. Slow, definitely, and although my experiment is still going on, I don't think that it's a fantastic miracle cure. I photographed a couple of bits as a 'before' picture last weekend, so I'll revisit them in a week or so. Thin stuff does disappear but I put some bolts in that had the nasty strong flaky stuff and they haven't really been touched yet.
Zinga - just noticed that I have a bottle of their thinners and had forgotten part of the conversation I had with them. Deffo needs thinning for spraying, but almost certainly does for brushing too. You'll need to get some. I should be using it for the first time next week and will be spraying, so I'll try and remember the %age thinning that works and let you know. I'm taking an axle and bits to a blaster and waiting while he does them so I can get the paint on immediately. Cue torrential rain and high humidity on Thursday.
For the Zinga (as for the Ferpox) I've bought the spray can versions. I know I'm getting a poorer deal for the unit weight or volume of the product but I'm hoping it will save me some trouble with thinners and having to go and dig my compressor out of storage...
...when I get some (rattle can) spraying done I'll post up the results.
I too will be dancing with the clouds this week - good luck!