Page 1 of 3 123 LastLast
Results 1 to 10 of 28
  1. #1
    Veteran Member
    Join Date
    Aug 2007
    Posts
    2,352
    Location
    Wayne County Pa.
    Tractor
    Massey Ferguson model 85, Allis-Chalmers WD-45

    Default Mixing coolant

    Big discussion in work. Can you mix the green and red coolants with no ill effects? Counting on my TBN brothers here. ;-) BTW, I don't have a horse in this race.
    Knowing is not enough, you must apply.
    Willing is not enough, you must do.
    Bruce Lee

  2. #2
    Veteran Member sam5570's Avatar
    Join Date
    Jan 2012
    Posts
    1,381
    Location
    south west virginia
    Tractor
    new holland tn70

    Default Re: Mixing coolant

    as far as i know yes you can mix red and green i have done it for years after all it is antifreeze no matter the color the red has brought up some intresting discussions @ some swap meets some very well known engineers say the only reason they made it red was they warrented it for a long period of time and it wouldd hide the corosion or rust.

  3. #3
    Veteran Member crashz's Avatar
    Join Date
    May 2005
    Posts
    1,200
    Location
    Eastern MA & Upstate NY
    Tractor
    John Deere 770, Bobcat 753

    Default Re: Mixing coolant

    Depends onthe red and the green. Fieldservicengineer is an expert in this, so I hope he weighs in on this thread. I'll give you my understanding below:

    Typical green coolant is glycol based. What is usually refered to as red is a long life oraganic acid based coolant (think Dex-cool). When red coolant came out, it was not at all compatible with glycol coolant as far as I understand. GM replacement Dex-cool currently does not recommend mixing coolant types. Last year I replaced the Dex-cool in my 2004 GMC and the replacement coolant (Prestone I think) specifically warned against it. I have no idea what the effects are if you mix the two. I have heard that it will cause solid particles to form and fall out of suspension, clogging passage ways and tubes. But I have not mixed them, so I don't know for sure.

    Now there are long life coolants that supposedly mix with everthing (other Prestone products), however I have not used them. Its actually been a while since I've seen name brand glycol only coolants.
    I've had a wonderful evening, but this wasn't it. ~ Groucho Marx

  4. #4
    Member
    Join Date
    Mar 2006
    Posts
    49
    Location
    western ny
    Tractor
    5500

    Default Re: Mixing coolant

    When I was working in a shop back when dex cool came out, we were all told the same thing. Dont mix extended life with the green stuff, but no one could tell us why.......

    We decided to do an experiment. We pulled some dexcool and some standard green coolant mixed them in a clear jar and left them on the shelf. After months and months nothing happed. We put broken pieces of aluminum casting from a smashed water pump, we added cast iron pieces, steel chunks, even put part of those gm plastic /rubber intake gasket.......anything we colud think of to try and get this bad thing to happen by mixing coolant. We even heated up the coolant mix ( minus metal) in the micro wave to boiling point. Nothing ever happened, no solids, no cloudyness, nothing exploded...haha

    I never understood why it was "bad" to mix them, But in our redneck testing found nothing out of the ordinary by mixing them. It wasnt long after that, they came out with coolant good for all makes and modles, so we gave up.


    My limited and maybe worthless 2cents
    Brian

  5. #5
    Super Star Member
    Join Date
    Sep 2000
    Posts
    10,874
    Location
    Triangle Of North Carolina
    Tractor
    JD 4700

    Default Re: Mixing coolant

    It depends on the what is the Red and Green coolant.

    My F350 had gold/yellow coolant from the factory. When it was time to change the coolant in the truck, I put in JD coolant which I think was green. The chemistry was the same, only the color was different. I don't think you were supposed to mix the Ford green and Ford gold/yellow colored coolants.

    Sad thing is that I just changed the coolant in the JD and the F350 and I cannot remember the color. The overflow tank in the truck has looks yellow. Guess I need to look in the jug the coolant was shipped. The JD coolant I used for years was Cool-Gard I and now it is Cool-Gard II.

    Later,
    Dan

  6. #6
    Member
    Join Date
    Jun 2008
    Posts
    27

    Default Re: Mixing coolant

    I work on big trucks and working with engine maunfactures have learned a few things on this. First yes you can mix the green with most of the reds. When you do this you basicly loose the advantages of long life coolant. When you are done mixing them, the coolant properties are that of the green. Meaning you need to replace it every couple of years as the rust inhibators, etc. break down. Dont mix the two thinking that you are extending the life of the green. Not that most of you worry about it but the engine manufactures are real particular about what you put in there engines. They want the coolant to have the proper additive package they feel their engine's require. This is real important when dealing with diesel engines with wet liners. It can cause warranty issues. GM is a stickler on Dexcool and Ford is the same with there gold colored antifreeze. Hope this info helps.

  7. #7
    Platinum Member
    Join Date
    Jun 2009
    Posts
    625
    Location
    Nowhere
    Tractor
    1878 Ford 65N

    Default Re: Mixing coolant

    The wife has G12 coolant in her VW Jetta. I hate that thing but that is another story. You can NOT mix that stuff or it will gel up and make a gooey mess.

    I changed the thermostat in her car a while ago and I had to catch, filter and re-use everything I could. That stuff is worth more than gold at $40 per 1 litre.

    There is a ton of chemistry in coolant. I don't think metal is the only concern. There are plastic engine parts, gaskets, rubber and other stuff that can be affected. I don't believe all the manufacturer hype on a lot of things but in these cases do you have the long term confidence to put another coolant in there and to know all the material compatibilities?

    Food (or coolant) for thought.

  8. #8
    Elite Member jonyyuma's Avatar
    Join Date
    Sep 2010
    Posts
    2,972
    Location
    35 miles North of Memphis,TN
    Tractor
    kubota L3000dt, ford 8n1952

    Default Re: Mixing coolant

    Same here, was told by Toyota Dealer not to mix any thing with red coolant..I have seen thick gooey base run out of older prestone coolant that i has stored unused in the jug.I liked Peak or Texaco for replacement on my diesels. Prestone yellow did plug up the GM radiator, enough for a rod-out job. Was told then it was due to Silicone Content..
    Okay, Legal disclaimer: Old but not senile, definitely do not have the answer to everything!

  9. #9
    New Member
    Join Date
    Sep 2013
    Posts
    1
    Location
    Perth, WA
    Tractor
    Kubota L4400

    Default Re: Mixing coolant

    NEVER mix red and yellow coolant. In particular avoid the yellow supermarket coolants, they often state they are glycol free. Mixing green with red is acceptable, they are both glycol based, mixing red with yellow turns the mixture into a glue, with particles 2-4mm in diameter that clog up the fins of the radiator. Cooling systems have no filtration systems, even if they did, the filter would be clogged. Red and yellow will destroy your radiator, your pre-heater, the cabin heater and some types of coolant sensors. Using glue as an engine coolant is the best way to destroy a functional cooling system and put the engine at risk.

  10. #10
    Elite Member
    Join Date
    May 2013
    Posts
    2,611
    Location
    Knox, In,
    Tractor
    Ford 3400, Gizmow ZTR, Simplicity 7016H

    Default Re: Mixing coolant

    Sorry, cant go by color anymore..

Page 1 of 3 123 LastLast

Similar Threads

  1. Antifreeze- is any type OK?
    By KenPauling in forum Oil, Fuel & Lubricants
    Replies: 105
    Last Post: 08-03-2014, 03:23 PM
  2. how come my oil is green?
    By msjanket in forum Iseki
    Replies: 38
    Last Post: 04-06-2012, 12:45 AM
  3. coolant question
    By RollingsFarms in forum Oil, Fuel & Lubricants
    Replies: 13
    Last Post: 10-26-2008, 02:04 PM
  4. Missing Coolant?
    By okietractor in forum Yanmar
    Replies: 5
    Last Post: 01-24-2007, 12:48 AM
  5. Dexcool
    By Typhoon in forum Oil, Fuel & Lubricants
    Replies: 14
    Last Post: 01-14-2004, 08:10 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2016 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.