Winterizing water system

Discussion in 'Winterizing' started by menos22, Dec 1, 2020.

  1. menos22

    menos22 Member

    May 26, 2009
    Colonial Beach, VA
    1994 Sea Ray 350 Express Bridge
    Twin 454 Mercruiser With V-Drives
    Just winterized my fresh water system, the old fashioned way. Drained system addded 6gals of Pink stuff turned on pump and did not see any pink at the faucets.. Hummmm. Guess what happened. I had put some bleach in the water system a while ago and apparently there was some left in the system. The bleach removed the pick color from the antifreeze so you could not tell when the pink was in the lines. Flushed system with fresh water, added more pink stuff and all was good. Passing this along just in case someone runs into this situation. Put a tiny bit of bleach into a container with some pink stuff and it turned clear. Just FYI.
    Chris-380 likes this.
  2. Soulshine

    Soulshine Well-Known Member GOLD Sponsor

    Sep 25, 2016
    Seneca Lake, NY
    '83 SRV 360 Express
    Twin Merc. 454
    Good catch.

    Many people would not have thought of that.
  3. markrsimon

    markrsimon Active Member

    Sep 1, 2018
    Cleveland, OH
    92 Sea Ray 400 Express
    454 Mercruiser
    Another option that some of us do involves blowing out the lines with compressed air. Saves the expense of the pink, but primarily avoids the spring time hassle of trying to get the pink back out of the system. They even sell a pre made adapter to connect your air compressor to the dock water inlet. Same concept works on the air conditioning units as well. One key note - make sure you get the water out of the pumps, or push a small bit of pink through them.
    Snapon24 likes this.
  4. Islandtime04

    Islandtime04 Member

    Dec 10, 2017
    Chesapeake Bay
    2004 420 Sedan Bridge
    Walker Bay 325 Super Tender 30hp Tohatsu
    Cummins 8.3 480CE's
    I too blow-out my water system so I don't have to dump all that pink stuff in my water tank and deal with flushing out the system in the spring. I made a jig to fit my dock side water inlet(quick connect) with a control valve on my air line to control the pressure. Good advice on the dealing with the pump though...wish I knew that 4 yeas ago.
    I also made a jig for my A/C and Gen sea strainers and a separate one for my mains. It's an extra groco sea strainer cap tapped with a 3/4" hose fitting with pepcock to control the flow. Screw it on the sea strainer and the other end goes into a 5 gal bucket sitting on high on the deck filled with pink stuff. Turn on the A/C or gen and it sucks it through nicely.
    Chris-380 likes this.
  5. Chris-380

    Chris-380 Well-Known Member

    Jan 20, 2019
    Pontoon Beach IL
    2000 380 Sundancer
    7.4L Horizon w/V drives
    this is what I do to winterize, works great. Can winterize the 2 engines, genny and 2 AC units in less than 1 hour
  6. mratlndmrk

    mratlndmrk Active Member GOLD Sponsor

    Mar 5, 2018
    Newburyport, MA
    2003 Sea Ray 380
    Merc 8.1s
    ZF 6.3 V Drives
    Westerbeke 7.0 BCGB Genset
    I think I just learned a quick way to get rid of the pink in the spring!
    Chris-380 likes this.
  7. SKybolt

    SKybolt Active Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    Low profile
    Alison Gears
    12.5kw Genset
    I guess I over thought what I do. I put in a shark bite three way valve before the pump. After the water tank is completely drained I flip the valve and do the pink. I like to put the pink through the pump and strainer. In the spring it's 1 qt of bleach, fill the tank a third to half way and run empty then re-fill and I'm good. I blow the ice makers out with air, never pink the ice makers.

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