when I put mine in I didn't have all this info a couple of years back... At the time all I knew was they said phosphate free was what we needed. But I haven't had any issues yet.. fingers crossed. But I plan on switching to volvo at 100k anyway.
"Propylene glycol can be mixed with ethylene glycol without causing harm to the cooling system, but it does slightly weaken the heat transfer."
"Extended Life (OAT) antifreeze is NOT compatible with conventional (IAT) antifreeze. Aside from discoloration of antifreeze when the two are mix
ed together, a chemical reaction is caused when the carboxylate salts are mixed with the inorganic salts and caustics found in conventional antifreeze. If they are mixed, the antifreeze can become cloudy, precipitation can generate and the coolant will lose it’s extended life properties."