Obviously, it helps to have a friend inside your RV to manage the faucet operation. If you want to RV in cold climates with the use of your holding tanks, you can use antifreeze to prevent your holding tanks from freezing. For drinking, cooking, washing, and flushing, use bottled water. Automotive antifreeze is a whole different critter. rv antifreeze is not made to protect an automobile cooling system from freezing, its designed to stabilize any excess water that may be in traps, water tanks, etc after all the water is removed...it does not work if one has 2gals of water in a water tank and puts rv antifreeze in it to stop it from freezing. Sweet! RV Doctor's Orders: Is it safe to put RV antifreeze in the fresh water tank? You need to consult a rv professional before using … Pick up a Bunch of RV Antifreeze and Fill. We followed the instructions exactly but ending up putting 2 gallons of antifreeze in the water heater. Is this going to be a problem next year? many also comment about the taste and swear that they'll never do it again, because it took so much water to flush the taste out. The best type—the only type, for safety reasons—is propylene glycol, a.k.a. Once all the lines are filled take the remaining antifreeze and pour some down each drain. It helps even more if you have a strong armed friend who will stand outside and do the pumping. We use antifreeze for flushing during winter camping (we use only the black tank in the winter). Keep the interior of your RV at 55 degrees or higher to help heat your tanks. Every week we take a look back at the RV Doctor Gary Bunzer's answers to your tough questions. I do my own winterizing and I might be paranoid but I put antifreeze in the city water connection, the black tank flush, and any where else I can think of. He has been providing insight into troubleshooting, repair and preventative RV maintenance since 1968. You need to get RV antifreeze, it is non-toxic and can be used in drinking water systems. I picked up 8 gallons just to be sure and with a funnel fed it into the fresh water tank fill hole. why would you need to put antifreeze in the FW tank? I then put some antifreeze in the toilet bowl. Drain all of the water tanks, Completely drain all black, gray, and fresh water tanks at a sanitary dump station. When I went to buy some RV antifreeze, they were all sold out. Every week we take a look back at the RV Doctor Gary Bunzer's answers to your tough questions. Rv antifreeze can be of 3 different types, each of them can cost around $6-$8 per gallon. Posted By: Teoma on 10/17/10 04:29pm I recently winterized (pumped Walmart RV antifreeze thru RV system etc). The only way to do it would be to pump it through the entire system. While there’s nothing wrong with using a simple hand pump, there’s more than one way to do this job. Once you’ve done that, put two gallons of RV antifreeze in the tank and then run the pump and open each faucet a little bit. Thanks In Advance. RV Doctor's Orders: Is it safe to put RV antifreeze in the fresh water tank? We prefer to get the stuff in the rectangular bottles – just because they fit between the toilet and the wall in the bathroom. Remove water from the hot water heater and the water lines. Here's how to flush your RV water system and get it ready for use again. Approximately 2 to 3 gallons (7.6 to 11.4 liters) of antifreeze should be enough to fill the RV’s entire plumbing system, provided a bypass is installed. If you are going to be in below-freezing temperatures for most of the time, then you can add good quality non-toxic RV antifreeze (one designed for RV use) to the septic system. Does anyone know how to make your own RV antifreeze from household chemicals or something you can buy inexpensive??? Answer. I recently needed to put antifreeze in the plumbing lines/ hot and cold lines. Should I Use Antifreeze?3 Rules For Antifreeze Use In An Outdoor Boiler Many outdoor boiler owners ask the question “Should I put antifreeze in my outdoor boiler?”The answer is almost always the same – “NO!”Why not?