KROIL
 

I use and love Aero Kroil because it's better than anything else I've ever used and I work on a lot of rusty cars .

I needed a new can of it and discovered a thread here about buying it directly from Kano Labs using the " NED-DEAL " ~ the page was called a 'v-bulletin' and I wasn't allowed to sign into it as I wanted to update it as the price has risen yet is still cheaper than buying it resale from the very few who sell it at auto jumbles and so on .

Here's the Pelican link : Kroil By Mail - Pelican Parts Forums

One of the best tools in the shop in my opinion.