Over doing it with the anti freeze ?????

I've always just gone by the pink coming out of all faucets, stool and shower and never had any trouble in spite of below zero temps.

The pink part is just a dye and doesn't indicate how strong it is.
They're probably saving $.00000000001 per gallon by reducing the colorant.

:h Yaaa, I think you are getting kinda (ain't gonna say it) on that issue.

I never use 2 gallons total when I do mine, but it winters in central IL.

Next time put it in a cup and it will look as pink. How many quarts/gallons did you use?
Did you bypass hot water, drain tanks and remember the city water inlet?

It looks less pink, but it isnt.....Better too much than not enough. Besides, this way you get lots in the drain.......you are good

Do you have a filter and if so did you drain it before winterizing?

Well, now think about this? Isn't the pink stuff suppose to go through the lines and #1 push out the resident water and #2 replace the resident water? ... sooooo
the first water that comes out of the faucet is going to be diluted with the existing water in the lines until the pink stuff 100% occupies the water lines and then it should be the same color.

Is it necessary to wait this long? No. When the pink stuff begins to pour out of the faucet, it's good to go. But that explains why the color is lighter.

Also, when looking at the pink-stuff in the 1 gallon jug, your looking through more volume, what? 8 inches in diameter. When your looking at the stream coming from the faucet, it's what? 1/2 inch? Of course the color coming from the faucet will be lighter (not as bold).

Friend, you're good. No need to overkill.

I run a little extra to take care of the traps in the sink's. I use about a gallon and a half.

Don't forget to do the outside shower if you have one.

You could always blow it out and capture the pink then run it through again.