Coolant for Old Mopars

Heating, Cooling & AC

  1. JimKueneman

    JimKueneman FBBO Gold Member FBBO Gold Member

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  2. Dennis H

    Dennis H FBBO Gold Member FBBO Gold Member

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    Green. Old school. 2 years life.
     
  3. JimKueneman

    JimKueneman FBBO Gold Member FBBO Gold Member

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    You are talking just plain old kill the neighbors cat glycol coolant? You can still buy that? ;)
     
  4. Dennis H

    Dennis H FBBO Gold Member FBBO Gold Member

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    A shop did the last service. I insisted on green. It looks green and smells like the stuff that kills the ducks. It works too, every 2 years it gets replaced. Cheap insurance. No pink or orange stuff in my old ride. No Dexcool or its impaired stepbrother.
     
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    • 65-440

      65-440 Well-Known Member

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      I use the cheapest non diluted green coolant I can find .... honestly you can use whatever you like as long as whatever was in there before is completely flushed out, be it green, pink, orange, blue ......
       
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      • PaveFE

        PaveFE FBBO Gold Member FBBO Gold Member

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        Zerex Original Green (by Valvoline) Amazon $16

        Zerex.jpg
         
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        • PurpleBeeper

          PurpleBeeper Well-Known Member

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          OK, "Low Tox" means it has propylene glycol instead of ethylene glycol as the "antifreeze" component of the formula. Proplyene glycol won't kill your dog. However, I'm not positive about the rest of the formula. Our old Mopars used "Peak Green" (behind the counter, actual name not just color) which is a phosphate conventional green colored coolant (OEM style). fyi - Peak Long Life green (on the shelf) is actually green-dyed DexCool & will work, but is not what Mopar put in these cars back in the 60's & 70's.
           
        • moparjohnny

          moparjohnny FBBO Gold Member FBBO Gold Member

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          evans waterless coolant suppose to prevent over heating.
           
        • 747mopar

          747mopar Well-Known Member

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          I just buy the cheap green coolant and have for many years.
           
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          • Ranger16

            Ranger16 Well-Known Member

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            This is what I use, but I really don't think WHAT you use is as important how often you change it. I'm with Dennis, every other year is cheap insurance.

            [​IMG]
             
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            • JimKueneman

              JimKueneman FBBO Gold Member FBBO Gold Member

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              As long as it is a clean start I think. You don't want to start mixing and matching all the different chemistries they have these days.

              Thanks all, I will buy what is available since I plan on driving this thing and having readily available fluids is mandatory.
               
              Last edited: Mar 16, 2017
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              • khryslerkid

                khryslerkid FBBO Gold Member FBBO Gold Member

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                Last edited: Mar 16, 2017
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                • Dennis H

                  Dennis H FBBO Gold Member FBBO Gold Member

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                  Wow! Score. Gonna stock up a bit while still available. Thanks.
                   
                • Ranger16

                  Ranger16 Well-Known Member

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                  Not sure what kind of water they use in the 50/50, but "filtering" won't take minerals out like softening it will. I always use the concentrate with distilled water. 50/50 is way overpriced considering you are paying for a half gallon of water.
                  1 gal of Prestone 50/50 = $16
                  1 gal of prestone concentrate ($18) & 1 gal of distilled water ($1) = 2 gal of coolant for $19.
                   
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                  • khryslerkid

                    khryslerkid FBBO Gold Member FBBO Gold Member

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                    Good point. I was thinking about the fact of useing tap water or well water wouldn't be a good idea.
                     
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                    • Car Nut

                      Car Nut Well-Known Member

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                      Wow, you paid almost twice what I paid!

                      prestone.jpg
                       
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                      • 747mopar

                        747mopar Well-Known Member

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                        Really? That's all I've ever used.
                         
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                        • khryslerkid

                          khryslerkid FBBO Gold Member FBBO Gold Member

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                          I'm wondering what this guy used? The radiator felt like 100lbs!
                          20160627_225834.jpg 20160628_151900.jpg 20160628_160225.jpg
                           
                        • lewtot184

                          lewtot184 Well-Known Member

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                          i've used the low tox stuff before. no issue with it but IIRC freezing and boiling points are different when compared to ethylene glycol at the same concentrations. i don't think an ethylene glycol tester works correctly with it either.
                           
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                          • PurpleBeeper

                            PurpleBeeper Well-Known Member

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                            Yep.... you need distilled water or at least de-ionized water. The dissolved minerals in tap/well water is "radiator sludge/scale in the making"
                             
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