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Antifreeze with ethanol?

Discussion in 'Technical Discussion' started by Uk4life, Oct 2, 2014.

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  1. Uk4life, Oct 2, 2014
    #1
    Uk4life

    Uk4life Member

    Joined:
    Apr 29, 2012
    Messages:
    36
    Location:
    Cincinnati, Oh
    Hello,

    I have a 32' Carver with twin inboard 350 Mercruisers that is cooled with raw water from the river. The last 2 winters in Cincinnati I left the boat in the water at the marina and winterized the engines with standard propylene glycol RV antifreeze. I just saw a great sale for the RV antifreeze that has ethanol in it and I am wondering if it would be safe to use for the engines? My gut says no....but I thought I would pose the question here since I have learned a wealth of knowledge from YF.

    Thanks!
    Bryan
  2. Fishtigua, Oct 2, 2014
    #2
    Fishtigua

    Fishtigua Senior Member

    Joined:
    Jul 20, 2007
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    Location:
    Guernsey/Antigua
  3. Uk4life, Oct 3, 2014
    #3
    Uk4life

    Uk4life Member

    Joined:
    Apr 29, 2012
    Messages:
    36
    Location:
    Cincinnati, Oh
    Thanks FISHTIGUA.

    I wasn't sure if the ethanol would damage the engine in any way. The sale for the ethanol antifreeze is $1 cheaper per gallon.

    The boat will be in unheated indoor storage and figure -50 anitfreeze will be fine.