Originally Posted By: Char Baby
This will be a confusing subject til the end of time!
It can be because the are many choices and chemistry of each can be vague to unknown, and color is unreliable as an indicator. In addition to reading this board for awhile, there are two relatively current resource articles posted here which I've found very helpful.
http://www.motor.com/magazine/pdfs/082010_08.pdf
http://articles.sae.org/11284/
What makes PGL somewhat unique is it is and extended/long life OAT like DexCool and the universal Dexclones, but unlike those it does NOT contain 2eha which is a known plasticizer that may have an effect on non compatible gaskets. Also unlike the Asian oem P-HOAT's it is available as a concentrate, though may be a bit more difficult to find. It's a universal OAT minus 2eha.
Originally Posted By: SOHCman
So, just to clarify:
Peak global lifetime, zerex asian, and GO-5 are all good non dexclone antifreezes, BUT only PGL is available as a concentrate? Doesnt NAPA have a asian coolant?
Of those listed G-05 is the only one that contains silicates, though it is low silicate HOAT formula and is available as a concentrate. In addition the applications specing G-05, some members report successfully using it in Asian vehicle applications too.
Afaik, NAPA does not carry thier own branded Asian coolant. In addition to Zerex G-05, they carry ZAF premix, and some carry PGL full strength or can get it.