Expert
Posts: 5870
![5000](https://horsetrailerworld.com/forum/images/decorations/multiple/5000.gif) ![500](https://horsetrailerworld.com/forum/images/decorations/multiple/500.gif) ![100](https://horsetrailerworld.com/forum/images/decorations/multiple/100.gif) ![100](https://horsetrailerworld.com/forum/images/decorations/multiple/100.gif) ![100](https://horsetrailerworld.com/forum/images/decorations/multiple/100.gif) ![25](https://horsetrailerworld.com/forum/images/decorations/multiple/25.gif) ![25](https://horsetrailerworld.com/forum/images/decorations/multiple/25.gif) Location: western PA | If you purge your system with anti freeze in the fall, the little remaining water is a moot point. It will be flushed and replaced in the Spring. If you don't drain it, the remaining water will not harm your tank when it freezes. It is very difficult to add ports to a polypropylene water tank. If it is of an ABS construction, drain valves and most other plumbing fittings are easily attached and modified. Gard |