Game plan (mostly just for curiosity):
1. Buy a bottle of red IsoHeet and see what it looks like.
2. Email the mfg to see if there`s a shelf life, and if so, what are the results of old age on a bottle of their stuff, and is the date code top secret, or would they be willing to share.
Oh, number 0.5- go to bed. I work nights, and Monday (Tues morning) always leaves me zonked, so the rest has to wait.
Wahoo, does MSDS really give color/appearance? I don`t remember ever seeing that info on them, but to be honest, ours are mostly just dust holders and decorations for the saftey inspections.