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  1. #1
    Silver Member
    Join Date
    Feb 2008
    Posts
    244
    Location
    Central Maine
    Tractor
    Mahindra

    Default Another loading tire question (volume of 15X19.5s)

    So I think I may go with Propelyne glcol pumped in myself rather than jacking up the tractor, removing the tires, taking them out to the tire place, paying to have them put tubes in & pump in calcium cloride, then trying to load/unload super heavy tires by myself, mount back on tractor.

    I just need to figure out:

    1. How much the glycol route is going to cost.
    1a>How much water can be added to the glycol before it becomes frozen at -
    20F(this effects the cost)
    1b>How many gallons I would need to fill to 75%

    2. Is propelyne glycol damaging to the rubber over time.

    3. How am I going to pump it in. (We have chemical pumps & transfer pumps at work so this shouldn't be a problem.

    I priced new gylcol & here are the prices:
    a 55 gallon drum of -100F is $442 (shouldn't need NEARLY that much though)
    5 gallon pails of -50F is $30.54

    So anyone know how to figure out how many gallons I will need to "almost" fill two 15X19.5 tires?

    What size opening is there on a Mahindra 2615 rim? can you take the stem out from the outside for a larger fill hole?

    Also how heavy is P.G.? I know it is heavier than straight water.
    "Contentment is not the fulfillment of what you want but the realization of how much you already have"
    "The best things in life,...aren't things"

  2. #2
    Bronze Member
    Join Date
    Dec 2007
    Posts
    91

    Default Re: Another loading tire question (volume of 15X19.5s)

    29 gallons per tire according to this:

    Rim Guard™ Hydro-Flation Table for AG Tires

    I believe this table is to 75% full.
    Tim M
    Kioti CK30 HST, Woods LC102 w/QA and BH80X, WR LONG 48" OBGPL

  3. #3
    Veteran Member
    Join Date
    Jul 2004
    Posts
    1,628
    Location
    Bancroft, Ontario
    Tractor
    JD4300

    Default Re: Another loading tire question (volume of 15X19.5s)

    If propylene glycol is normal radiator antifreeze, we normally mix it 50-50 for minus 40. Should be a chart on the containers at any big box store or the Prestone website. If you mix it stronger than 50-50 it still gels at about the same temp for some chemical reason...
    Don't leave any open containers where your pets can drink it as it tastes sweet and they will lap it up, then die

  4. #4
    Gold Member
    Join Date
    Aug 2006
    Posts
    267
    Location
    Charlotte, NC area
    Tractor
    Kubota BX24

    Default Re: Another loading tire question (volume of 15X19.5s)

    Quote Originally Posted by pat32rf
    If propylene glycol is normal radiator antifreeze, we normally mix it 50-50 for minus 40. Should be a chart on the containers at any big box store or the Prestone website. If you mix it stronger than 50-50 it still gels at about the same temp for some chemical reason...
    Don't leave any open containers where your pets can drink it as it tastes sweet and they will lap it up, then die
    The normal stuff sold by Prestone, Fleet, etc. is actually ethylene glycol. It does indeed taste sweet and will kill animals.
    Propylene glycol is used as antifreeze in RV drinking water systems during winter storage. It is not poisonous. For automotive use an "environmentally friendly" propylene glycol is sold under the name of Sierra if I remember correctly.

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