Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-12-2018, 01:58 PM   #1
2 Rivet Member
 
2012 27' FB International
Austin , Texas
Join Date: May 2015
Posts: 55
Winter's almost here: ok to add antifreeze to black water tank?

Hi!

We are currently dry camping in front of my brother-in-law's house in Dallas. The next 3 nights are predicted to be below freezing and I have no way of emptying the black water tank, which we've been using sparingly at night. My wife thought of adding a small amount of antifreeze to the black water tank so that the freezes don't crack the tank. Is there any reason I shouldn't add antifreeze? If I can, how much would you recommend adding?

Thanks,
Mark
__________________

flyingfishy is offline   Reply With Quote
Old 11-12-2018, 02:13 PM   #2
Rivet Master
 
SteveSueMac's Avatar

 
2012 27' Flying Cloud
W , New England
Join Date: Oct 2012
Posts: 6,342
Winter's almost here: ok to add antifreeze to black water tank?

Iím not sure my expertise is sufficient to effectively answer this question - but Iíll attempt something for your consideration and trust others will have better advice to follow....

1) How full is your tank? The freeze issue is expansion so for starters, unless youíre at 85+% capacity, I donít think the tank is likely to crack.

Adding a gallon jug or two of AF (again, depending on how full it is) might give you some peace of mind and shouldnít hurt anything - when you winterize and run AF through the toilet flusher, some makes it down in to the tank to get flushed out when dewinterizing next season.

2) below freezing for 3 nights - how far below and is it only for a few hours at night and back above freezing during the day? I think if youíre getting down to say 30 for 6 hours overnight and then above 35 during the day, youíre not likely to have much of a problem.

3) are you staying in the trailer during the freezing temps? If so, depending on year/model, running the heater will ensure some hot air gets to the rest of your pipes which is what Iíd worry about more than an unfilled black tank.

Having said all this - whatís the reason you canít just dump the tank? If youíre near a campground or a Cabellas or even some highway rest areas so equipped, you might be able to make a quick trip and ease your mind a bit. If youíre staying at a house that has a clean-out for the sewer, thatís a possibility too.

Just some thoughts and suggestions. Sadly, this free advice is worth everything youíve paid for it so take with a grain of salt and see if more experienced folks correct anything Iíve said here.

Good luck!
__________________

SteveSueMac is offline   Reply With Quote
Old 11-12-2018, 02:14 PM   #3
CLOUDSPLITTER "Tahawus"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 12,828
Images: 1
?????

No
Just keep it empty & you won't have anything to freeze. 😂👍

Bob
🇺🇸
__________________
Instead of going to íStarbucksÖI make my own Coffee at home, yell out my name rong, then light a five dollar bill on🔥


"The hardest thing about Airstreaming, clearing your head and accepting how others feel itís supposed to be done"Ö..
Amanamus


"Tahawus"
ROBERT CROSS is offline   Reply With Quote
Old 11-12-2018, 02:15 PM   #4
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 6,238
Hi

The sewage tanks are actually a fairly small risk in the event of a freeze. The big issues are the valves and other items in the main plumbing. The city water input anti-backflow valve is hanging out in the cold air so it's pretty vulnerable. The low point drain valves are under the trailer so protected a bit. With wind from the wrong direction .... they can be an issue.

One "simple" way to dump the black tank is to use a bucket and run the result into a toilet in the house. Yes that's a lot worse than the normal process with a hose....

In terms of "how much", you want about 1/4 of what's in there to be anti-freeze for modest temperature drops.

Bob
uncle_bob is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Antifreeze in black tank flush? philly_air 2016 - Current Flying Cloud 12 12-03-2017 07:49 PM
Black Tank, Grey Tank, New Tank, Old Tank Bunkroom Waste Systems, Tanks & Totes 3 07-22-2014 09:35 PM
Hi from AZ-almost a trailer, almost an AS jforb Member Introductions 10 01-31-2011 01:02 PM
almost....almost.... rama777 Electrical - Systems, Generators, Batteries & Solar 30 11-04-2006 11:18 AM
It is here! Well, almost here... 1973 Ambassador Pschoerrn 1970 -1973 Ambassador 10 05-20-2005 03:56 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:01 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.