Anti freeze into fresh water tank

I do it this way all the time, been doing it for 15 years and never had an issue. I use about 8 gallons total , it's not that pricey usually someone always has a 2 for $5 sale on rv antifreeze in the fall. In the spring I do a through rinse with a diluted bleach mixture, this will kill anything that may have been growing in the lines and gets rid of the antifreeze taste, it takes a few tanks of water through the lines to get rid of the bleach smell. It's is recommended to do this bleach rinse to get rid of any organism that may grow in the water lines anyway so by doing this you are sanitizing your lines and getting rid of any antifreeze taste at the same time. Maybe not the best or most efficient way but it works for me and it has been effective.