No, I think it's alcohol and water. I just take it out and put it back in. A previous owner bought the stuff. I got the slide hammer bead breaker in 2011, after the local tire guy loaned me his to do the tractor tire. After using it once, I knew I had to have one of my own.
I hope the folks you knew used calcium chloride and not calcium! The problem with using calcium chloride is it's very corrosive, so a small leak will rust through a rim before long.
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