When the FDA was talking about "anti-freeze" they weren't even talking about propylene glycol.When people bring up the anti-freeze bit, I tell them, "yes, there is some anti-freeze that contains propylene glycol, but that's the non-toxic kind of anti-freeze."
"A third type of Antifreeze is a relatively new product known as non-toxic Antifreeze (Propylene Glycol based). As this product is manufactured using non-toxic Propylene Glycol rather than toxic Monoethylene Glycol, it is considered to be a safe alternative to traditional ‘blue’ Antifreeze..."
http://www.reagent.co.uk/non-toxic-antifreeze
But pretty much all of the public doesn't know that, so I guess it doesn't matter.
It was actually a reference to the diethylene glycol found in 1 of 18 samples tested.
No diethylene glycol has ever been found in any other cartridge ever tested by anyone, anywhere.