Toilet Tub and Tank(Abrams) cleaner? Checking bore brb. OK, no rust, no rough spots,just a little WD40 residual. Smooth as ever. More pros and cons.It does have a slightly caustic aroma, but I work in a pulp mill so my smell may not mean much.I mixed 1 ounce to 2 cups of water. Not really a hot mix. No harm done,it appears.
Yep, I always just use straight cold water. Just trying something different.