I wouldn't be surprised to find that CLR and other products like it (ie lime a way) are basically diluted muratic acid, with coloring and something for the fumes.
I use 10 parts water to 1 part muratic acid to clean the bottom of my fiberglass boat. And a 12 to 1 mix in my fiberglass shower, any more than that and it will turn chrome black.
I'd be cautious with it.
1957 WILLYS pickup, needs work.
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac trail Jeep.
1980 CJ5 trail Jeep.
1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
1984 Grand Wagoneer, 1 ton axles, great 360/727, and a big a$& tree fell on it .
1989 YJ the CJ to YJ conversion.
2005 TJ Rubicon.
2011 Grand Cherokee Laredo 4x4, Mrs. LUCDOG's DD.
Lots of parts not for sale, i'm a hoarder.