Antifreeze no longer pink

I have had a bottle sitting around for over a year and its still pink. Option 1 call the company Option 2 go buy new stuff. Is the cost of good antifreeze worth the possible destruction freezing could do in your rig.

I have had some sitting outside for over two years and it's still pink, was the seal broke under the cap when you opened it? If so it may have been used & refilled with water.

I'll go get new I think. Can't explain why the color change.

I agree. Buy a new bottle.

Antifreeze is cheap. Replace it and try some new.

$3.50/gallon. Throw the old stuff away.

If you run RV antifreeze thru a Water filter, it will remove the Pink. Still good, just does not have the color. But, I have Pink antifreeze at the shop more than 3 years old and is still pink. Doug

BarabooBob wrote:
$3.50/gallon. Throw the old stuff away.

I think this is the best option.

Put some in your freezer and see what happens. RV antifreeze can freeze but will not expand. It will likely turn to slush.

The dye color can fade, but so long as the bottle is sealed, there's no way for the antifreezing components (ethanol and/or PEG) to escape. I wouldn't have any qualms about using year-old discolored antifreeze, assuming of course it doesn't seem like there's something slimy growing in it or it's otherwise obviously bad and not merely faded.