Been following this thread from time to time and reading more about this so decided this week to take the plunge using silca hot wax. I soaked my 12yo's and 10yo's track chains figuring they're the easiest to start with. First soaked both in finish line citrus degreaser which I strained with a coffee filter after, there are a lot of gunk in it even for track chains which surprised me. Rinsed off with dawn and hot water, wiped dry and soaked for 1/2 hour in my new 2qt star wars crock pot, stirring occasionally. Once they were cool enough to touch I tossed them on the bikes and spun the cranks. Seems to be working fine. Won't really know if it'll make a difference with saving watts since they don't have good benchmarks to begin with and this wasn't the only change made to the 12yo's bike before she uses it next.