The Ford Barn

eystein · 12-27-2015, 04:55 PM

Checked the anti freeze at the top of the radiator and to my surprize it was only holding down to +5 deg F. So I decided to drain off some coolant from the drain cock at the bottom in order to make room for filling more anti freeze, but to my surprise I saw that the half gallon that I drained off was deep blue in color. When I measured the freezing point of what I drained off at the bottom, I discovered it was good for -58 deg F.

I then poured what I drained off at the bottom back at the top of the radiator.

The car then sat for two weeks, and now its the same story again. -4 deg F freezing point at the top of the radiator and -58 deg F at the bottom.

How can this be? Does the anti-freeze separate from the water over time and can the engine freeze up at the top while it is protected at the bottom.

12-27-2015, 04:55 PM	#1
eystein Senior Member Join Date: Jul 2010 Location: Oslo, Norway Posts: 523	Anti-freeze Separation ? Checked the anti freeze at the top of the radiator and to my surprize it was only holding down to +5 deg F. So I decided to drain off some coolant from the drain cock at the bottom in order to make room for filling more anti freeze, but to my surprise I saw that the half gallon that I drained off was deep blue in color. When I measured the freezing point of what I drained off at the bottom, I discovered it was good for -58 deg F. I then poured what I drained off at the bottom back at the top of the radiator. The car then sat for two weeks, and now its the same story again. -4 deg F freezing point at the top of the radiator and -58 deg F at the bottom. How can this be? Does the anti-freeze separate from the water over time and can the engine freeze up at the top while it is protected at the bottom.