Lee Smith Posted November 17, 2022 Share Posted November 17, 2022 I wanted to share my first-time experience winterizing my new (new to me) 2004 Signature Conquest. I tend to thoroughly research everything and could not do so without this forum. I want to express my sincere appreciation to the founders, administrators and members for making this all possible. My findings are as follows: Based on my research, I choose to use propylene glycol-based RV antifreeze instead of the more common and cheaper ethanol-based RV antifreeze: Ethanol mixed or pure is flammable and may harm the plumbing faucet rubber seals. Advertisements for RV antifreeze are misleading. Most contain a mixture of ethanol and glycol which many times is only specified as a potential range by percent of each. I responded to a NAPA propylene glycol internet search and went to pick it up. Much to my dismay I read the lable and found it to be a mixture with ethanol. It was pink. Fortunately, the store had a small stock of propylene glycol-based RV antifreeze from a prior customer special order. It was blue. Based on my in-store experience, I went online and found this specification for the offered propylene glycol (see this link): -100 WinterSafe RV Anti-Freeze - Non-Toxic PG (starbrite.com). Ethanol-based RV antifreeze looks like me to be always pink in color and sells for around $4 to $10. Propylene glycol RV antifreeze looks like me to be always blue in color and sells for around $33 to +++. It is pricy but I found it at Napa online for 20% off (quantity discount) and free ship to home (see this link): Antifreeze / RV Recreational Vehicle StarBrite 1 GAL NCB 31500 | Buy Online - NAPA Auto Parts (napaonline.com) . There are probably other places to buy but this is what I settled on. I hope to be able to recover and re-use my expensive propylene glycol RV anti-freeze. Here is a picture of the propylene glycol I used: I looked at a lot of systems that were advertised to make the introduction of the RV anti-freeze easier. It turned out that a simple city water supply hose attachment to use 40 psi air pressure to remove the water remaining after a tank drain and the attachment of a short extension to the freshwater tube feeding the water pump in my Aqua-Hot bay was the easiest to use, fast and also the most economical. I used 1/2" ID poly tube from ACE Hardware and bought small hose clamps to match. I removed my filters but chose not to bypass due to expense and space requirements. This method uses a little more glycol but looks least likely to introduce leaks. And was also based on my neophyte plumbing experience. Plus, no RV anti-freeze had to be put in the water tank. Also, the air blow-out let me use less RV anti-freeze. I used 7 gallons including the washer/dryer combo and tank back-flush system. I just followed the directions for each in my coach manual. Here is a picture of my water pump connections: Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now