Campers are a ton of fun during the summer months. While some people enjoy winter RV excursions, many choose to leave their RV in storage during the colder weather. The following guide provides simple tips and tricks on how to winterize an RV. During the winter, freezing temperatures can cause damage to the Plumbing inside an RV. This damage can cost thousands of dollars to repair. Fortunately, it's possible to avoid almost all damage by winterizing an RV. Winterizing usually involves the application of special antifreeze products into an RV's plumbing system. By displacing water in a plumbing system, antifreeze can reduce the risk of frozen pipes. While regular vehicle antifreeze could work in an RV, it's usually not a good idea to use it in plumbing for potable water. In many cases, antifreeze that is used in vehicles is poisonous. If it is used in the freshwater plumbing system of an RV, trace levels that remain in the RV could result in antifreeze poisoning. Fortunately, there are a number of non-toxic commercial antifreeze products that can be used in campers. It's often possible to find these antifreeze products at commercial retailers and home improvement stores. Before wintering an RV, it's important to flush all the water from the RV. While it won't be possible to remove all water, it's essential to remove as much water as possible. Trace amounts of water will remain in the u-bends and plumbing fixtures inside an RV. After flushing all the water out of the RV, it's time to add antifreeze. Antifreeze should be poured down every sink, shower and toilet in an RV. After filling the drains with antifreeze, it's important to add at least five gallons to the fresh water tank in an RV. Once antifreeze is added to the freshwater tank on an RV, it's important to turn on the freshwater pump. This will circulate the antifreeze throughout the plumbing system. After running the pump for a few seconds, turn it off. This will leave the antifreeze suspended in different parts of the plumbing. It's also important to make sure that the roof on an RV is free of leaks and other issues before wintering it. This can be an effective way to avoid mold and mildew issues in the spring.