excellent graph for coolant freeze point and various concentrations! would never know ...
one correction though. the Toyota Long Life Coolant (RED) concentrate is not "newer"
it's actually the very old formula that was initially used in factories back in the day a decade (or two) ago. Toyota is trying to phase it out nowadays, jacking its pricing up with every year and making consumers switch to newer TSLLC (PINK) premix which may be even more expensive (and can be harmful in older cars a long run, just like using T-IV or Dexron-VI can be in old transmissions).
The sad truth is that this pink premix was NOT designed to protect brass/copper parts that are present on older gen3/gen4 designs. I wouldn't use that in older cars with brass ports and copper heater cores, it's asking for trouble, things will corrode over time. Newer designs are all aluminum as I read and TSLLC PINK was designed for that while TLLC RED was made for gen3/gen4 era and it did a remarkably great job.
There is also a cheaper alternative to Toyota RED, sold by NAPA, but I forgot its name, something with A1 in name and a name sounding like Pentofrost or something
Green Zerex is also good, but yeah, max life is 2 years I think, that's what people who use it say around here. Used it once personally, but flushed it out before 2 years passed, switched back to Toyota cherry red and happy with it
never tried personally the Global Peak 50/50 on any Toyota, isn't this coolant a Dexcool clone?