Good question. I often wondered the same. But, I swapped all mine out for the yellow/green Prestone stuff that says you can mix with any color antifreeze (although mine isn't mixed with anything but water). Hope I didn't mess up there. It's just so much more convenient to buy at Walmart.
Below -20??
Really? Ouch! And here I am thinking the +15 we are supposed to get here in Mobile is going to be the end of the world.
