Safe odorless and non-staining Super Tech RV & Marine Antifreeze provides -50 degrees F burst protection and is safe to use with potable water plumbing systems in RVs boats pools and vacation homes. It s a simple and read to use winterizer that you can rely on to protect your water lines during the heart of winter. This RV antifreeze comes in an easy-pour bottle and is simple to use for a variety of applications.