Eastwood Rust Encapsulator for frame /underside of 5th Gen 4 -Runner?

My underside frame of my 2016 TRD Pro is very clean and as a preventative measure I plan on spending a few hours underneath the truck working section by section, scraping any surface rust and then using the Eastwood rust encapsulator anyone have any experience with this stuff? Sounds like once you’ve scraped/ wire brushed away those areas with surface rust you can roll or brush the Eastwood rust encapsulator product over it. Has anyone here in the forum used their product and if so, have you seen any rust come back after a few years? The product is pretty high rated and has tons of good reviews. Thoughts?

 

Not that product, but I painted POR15 on everywhere I could on mine, then prayed everything with woolwx. that it lasts a while..