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  1. #11
    Join Date
    Jul 2002
    Location
    London Ontario Canada
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    1,855

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    Quote Originally Posted by drb59 View Post
    Today I did the steps to winterize but could not remove vdrive bolts I then put RV antifreeze in the vdrive and then used my air compressor to push this all through the vdrive and repeated this procedure How does everyone feel about this approach it semed like was able to work
    That is more than sufficient. If you drained the water out of it, then poured antifreeze in the intake you will find that it takes very little before you have it coming out the outlet.
    09 21v LAUNCH

    run your engine after you change your oil
    68 th Member. WS420,HSE Revolution, OJ 466, Acme1157,1100 sacs,Kicker HLCD's n IX500.4, Supra Coolies
    Doug

  2. #12
    Join Date
    Nov 2010
    Location
    Katy, TX
    Posts
    4,214

    Default Winterizing with antifreeze on block or not ?

    How are y'all adding antifreeze?


    Sent from my iPhone
    David

    2008 Mobius LSV, Gravity III , Wake Plate, Z5, Exile SX65c's, Exile XM9s, Exile XI12D, Exile Harpoon, Exile SM600.1 , Exile Xi800.4.

  3. #13
    Join Date
    Jul 2011
    Location
    Murrieta, CA
    Posts
    1,039

    Default Winterizing with antifreeze on block or not ?

    Quote Originally Posted by rdlangston13 View Post
    How are y'all adding antifreeze?


    Sent from my iPhone
    I pull a hose from the thermostat housing and fill till it is fill then reconnect the hose. Usually takes 3-4 gallons to fill.

    I can't remember which hose.

    Keep in mind I have not lived in a place with a hard freeze.
    2010 Moomba XLV
    340hp cat
    Gravity 3, wake plate
    Rad-a-cage

    I have a love for ballast and large wakes.
    1100 v-drive lockers
    1180 under the playpen
    + lead and a collection of other ballast bags

  4. #14
    Join Date
    Jul 2013
    Location
    Saskatoon, Saskatchewan
    Posts
    124

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    Thanks I thought this was good enough but wanted reassurance. I bought a bimini and the dealership will install in the spring so I will get them to loosen the bolts at that time for next season winterization.
    2008 Moomba Mobius LSV Ballast III (stock), Heater, Roswell Quad Spin Pro, Bimini

  5. #15
    Join Date
    Jul 2002
    Location
    London Ontario Canada
    Posts
    1,855

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    Quote Originally Posted by rdlangston13 View Post
    How are y'all adding antifreeze?


    Sent from my iPhone
    I pull the j pipe off the tstat and fill w antifreeze here after I have drained the block and sucked out water in the hose with a shop vac. Dont forget your heater if you have one
    09 21v LAUNCH

    run your engine after you change your oil
    68 th Member. WS420,HSE Revolution, OJ 466, Acme1157,1100 sacs,Kicker HLCD's n IX500.4, Supra Coolies
    Doug

  6. #16
    Join Date
    Nov 2010
    Location
    Katy, TX
    Posts
    4,214

    Default Winterizing with antifreeze on block or not ?

    Quote Originally Posted by DOCDRS View Post
    I pull the j pipe off the tstat and fill w antifreeze here after I have drained the block and sucked out water in the hose with a shop vac. Dont forget your heater if you have one
    So basically if I have to drain the block and disconnect the hoses there is really no point in doing this. I was hoping it would be something super simple so I could avoid draining everything


    Sent from my iPhone
    David

    2008 Mobius LSV, Gravity III , Wake Plate, Z5, Exile SX65c's, Exile XM9s, Exile XI12D, Exile Harpoon, Exile SM600.1 , Exile Xi800.4.

  7. #17
    Join Date
    May 2010
    Location
    Terre Haute, IN
    Posts
    272

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    For the past two winters I have just hooked a hose up to the raw water intake and put it in a bucket of marine antifreeze that is under the exhaust behind the boat. Then I just fire the boat up and let it run for about 20 or so minutes till I know I have the water flushed out of the engine. I thought this was correct. Is that not true? I don't drain the motor prior to running antifreeze in it.
    2006 Mobius LSV

  8. #18
    Join Date
    Oct 2010
    Location
    Lake Wylie NC Area
    Posts
    828

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    Quote Originally Posted by walb0244 View Post
    For the past two winters I have just hooked a hose up to the raw water intake and put it in a bucket of marine antifreeze that is under the exhaust behind the boat. Then I just fire the boat up and let it run for about 20 or so minutes till I know I have the water flushed out of the engine. I thought this was correct. Is that not true? I don't drain the motor prior to running antifreeze in it.
    Walb,

    I wont tell you your method is wrong, but here is some food for thought. The marine/rv antifreeze is best at 100%. Its not meant to be diluted with water, like automotive antifreeze. For this reason, theres no way to really say what the freeze protection level is, once diluted as you have done. Its a guess at best.

    I will admit, that I did basically the same as you, on a boat I used to own. It was too hard to reach the drain plugs, so I just cycled a few gallons of the pink stuff through it. Down here in NC, we get cold spells, but not long cold periods. I was completely comfortable with what I was doing, because I knew I was diluting the antifreeze. Owned that boat for 4 years and never an issue. After getting the tow boat after that one, we rode year round. I would just drain the water on the boat ramp, put the plugs back in and tow her home. Boat was turn key ready for the next warm day and I never used the antifreeze again. Once I figured the routine out, it only took about 10 mins to drain block and put everything back together.

  9. #19
    Join Date
    Jul 2002
    Location
    London Ontario Canada
    Posts
    1,855

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    Marine antifreeze looses its protection dramatically if its diluted. Sucking it up into a non drained engine at idle will give you a false sense of security. Take a thermostat with a thermometer and put it into a pot of water on the stove. You will be surprised how little it opens at 160. Now you tell me how long its going to take to get all the water out of the block and diluted with the antifreeze? So if you use 5 gallons of antifreeze and you do manage to distribute it with all the water in the intake line, block, heater, exhaust manifold, muffler(yes , lots of water in the muffler-try draining it sometime)....you have diluted it in half or more.....your protection is greatly reduced and at idle pressures you are luck to have fully reached all the passageways in the block.....plus your spending 20 minutes of running the motor......why not just drain the block, and the intake lines then the antifreeze will go directly into your block and the dilution wont be as great.

    Or you could run it for 20 plus minutes and check the specific gravity to determine the diluted burst protection......

    A solution of -50 antifreeze diluted in half will only provide a burst protection of +15 deg F.
    Last edited by DOCDRS; 10-08-2013 at 09:00 PM.
    09 21v LAUNCH

    run your engine after you change your oil
    68 th Member. WS420,HSE Revolution, OJ 466, Acme1157,1100 sacs,Kicker HLCD's n IX500.4, Supra Coolies
    Doug

  10. #20
    Join Date
    May 2010
    Location
    Terre Haute, IN
    Posts
    272

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    The first year I owned the boat I did drain everything per the thread with pictures on here. The following year I had to replace an exhaust manifold due to a crack in it. If I need to drain the water and then run antifreeze then I will. I just didn't know.
    2006 Mobius LSV

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