Quote Originally Posted by Waterlogged View Post
If you have a pre-RoHS rad, vinegar is fine in short term usage (30 min at a time tops). Post RoHS rad shouldn't see vinegar at all. The flux is a totally different kind of flux and is water soluble, hot water is all you should use.

To figure out which you have, there should be a sticker or some type of documentation stating it is a RoHS compliant product. Everything made by TC these days is RoHS compliant from my understanding.
It's definitely the water based flux.

I was lucky enough to get one of the "Limited Edition" PA120.3's that were only around for a month or so early this year.

I'm talking about the ones with the 24.5mm spacing and no bleed screw which in my opinion is the best combination you could ask for. :P