Winterizing Travel Trailer

pitch wrote:
I am in upstate NY. our freezing here is the same temperature as Colorado's freezing. First year we used the pink stuff. Never again. we had foamy water for most of that season.
I thoroughly and completely blow it out. Takes time to do it right,ain''t gonna get done during commercials, blow it turn one valve at a time let it settle and do it again

I buy the cheapest available RV antifreeze, usually from Walmart. I have never had even a hint of "foamy water". As soon as I put fresh water in the system, it flushes out the antifreeze with no hint of foam, residue, color or odor of any type.

Did you follow typical winterizing protocols? I hope you did not add antifreeze directly to the water tank. Most tanks will not drain completely sometimes leaving more than a gallon behind. That water lays on the bottom of the tank and does no harm when it freezes but it can make rinsing the tank difficult.

If you use the blow out method, you need to make sure you get every supply line and you blow out sufficiently to be sure water does not resettle in low areas. You also need to be sure you blow out all of the waste lines. That is difficult for most RVs. The drain lines are large and contain traps to contain tank odors. It is almost impossible to blow them out. Many people who do the blow out method still add antifreeze to the traps and waste lines. The water pump is also an issue. There is no way to blow out the pump and I would not want to run it dry. It is necessary to aspirate some antifreeze into the pump. I have a separate pump for the toilet. There is no access and do way to blow out the pump or any of the toilet water supply lines.

It is easy to aspirate antifreeze throughout the complete supply and drain lines and all wet parts of the RV. It is not easy to blow them all out of all remaining water. As a compromise you can use antifreeze and then blow it out afterwards.