Antifreeze

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   This may be a dumb question but can antifreeze settle out? I have an old nat gas powered pumping unit that has been sitting in the barn for the last 4 years. Before I parked it I changed the oil and antifreeze and then ran it for a few, maybe 10, minutes. I pulled it out a couple weeks ago and the antifreeze in the rad was slushy close to solid actually. I opened the drain on the block and it was fine. Put it in the heated shop and let it thaw out and took a closer look at it today. Antifreeze from the top of the radiator tested good to -8 celsius and the first stuff out of the block was good to -40. I mixed it all back up and it tested good to -29 which is about what it would have been when I put it in. How is that possible?

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Acguywill Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 15 Jan 2024 Location: Vauxhall ab Can Points: 188	Post Options Post Reply Quote Acguywill Report Post Thanks(0) Quote Reply Topic: Antifreeze Posted: 14 hours 54 minutes ago at 11:36pm
	This may be a dumb question but can antifreeze settle out? I have an old nat gas powered pumping unit that has been sitting in the barn for the last 4 years. Before I parked it I changed the oil and antifreeze and then ran it for a few, maybe 10, minutes. I pulled it out a couple weeks ago and the antifreeze in the rad was slushy close to solid actually. I opened the drain on the block and it was fine. Put it in the heated shop and let it thaw out and took a closer look at it today. Antifreeze from the top of the radiator tested good to -8 celsius and the first stuff out of the block was good to -40. I mixed it all back up and it tested good to -29 which is about what it would have been when I put it in. How is that possible?

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IBWD MIke Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 08 Apr 2012 Location: Newton Ia. Points: 4235	Post Options Post Reply Quote IBWD MIke Report Post Thanks(0) Quote Reply Posted: 8 hours 10 minutes ago at 6:20am
	Never heard of that, never given it much thought. I suppose it's possible? It may not have mixed completely in the short run-time?

Jim.ME Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 19 Nov 2016 Location: Maine Points: 970	Post Options Post Reply Quote Jim.ME Report Post Thanks(0) Quote Reply Posted: 8 hours 2 minutes ago at 6:28am
	That initial 10-minute run time was not enough to thoroughly mix it. You should have run it up to temperature so the thermostat opened and kept it there for at least 10-minutes to circulate and mix the entire system.

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 22553	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 6 hours 48 minutes ago at 7:42am
	Especially if you dumped in a gallon of straight antifreeze and then a gallon of water and then didn't allow it to reach operating temps (open thermostat).

Codger Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 23 Dec 2020 Location: Utopia Points: 2557	Post Options Post Reply Quote Codger Report Post Thanks(0) Quote Reply Posted: 6 hours 37 minutes ago at 7:53am
	I always premix 50/50 in a five gallon bucket coolant to distilled water ratio with ethylene glycol. Have never seen it separate in the past. Typically I use "Prestone" for automotive use and "Fleet Guard" in low silicate formulation for industrial and truck engines.
	That's All Folks!

Acguywill Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 15 Jan 2024 Location: Vauxhall ab Can Points: 188	Post Options Post Reply Quote Acguywill Report Post Thanks(0) Quote Reply Posted: 4 hours 27 minutes ago at 10:03am
	I always premix my antifreeze as well but just use tap water. Now a bit more information. I bought and mixed up a 10 litre jug of concentrated green antifreeze (actually 9.46l) a bit under 50/50 to give me about a -30c rating and topped it up with another 6 or so litres of the red stuff. All compatible. Now the stuff that came out of the block was nice and green but the stuff in the rad was the funny greenish reddish brown cloudy color. No actual rust or other gunk in any of it. I can't say I ve had an issue before but maybe the different types were not as compatible as the instructions indicated? But that wouldn't explain why the concentration varied from top to bottom.

DMiller Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 14 Sep 2009 Location: Hermann, Mo Points: 35255	Post Options Post Reply Quote DMiller Report Post Thanks(0) Quote Reply Posted: 4 hours 19 minutes ago at 10:11am
	As noted 50/50 mix drain and refill after full flush and then run to operating temp and Confirmed flow. Should not ever Settle or Separate. Are currently Four types out these days, Old Green, Orange GM, Orange Ford, Red Hi Nitrate HD Diesel.

Ed (Ont) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 08 Nov 2009 Location: New Lowell, Ont Points: 1574	Post Options Post Reply Quote Ed (Ont) Report Post Thanks(0) Quote Reply Posted: 3 hours 19 minutes ago at 11:11am
	If using the green traditional stuff then use only that. Do not mix any of the new types with it no matter what colour and there is every colour under the rainbow out there. The new ones are OAT(organic acid technology) whatever that means??? So choose one - old technology or new tech. Either way drain system and start from scratch. If you go green you have to change every it every 2-3 years or keep it maintained with a filter and dca system. The new stuff lasts longer but still needs to be changed periodically. The red stuff for big diesels claims to have a lifespan of 1.6 million km. I would not let it go that long!!! Edited by Ed (Ont) - 3 hours 18 minutes ago at 11:12am

steve(ill) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 89914	Post Options Post Reply Quote steve(ill) Report Post Thanks(0) Quote Reply Posted: 2 hours 35 minutes ago at 11:55am
	there is a YELLOW "Extended life 150,000 miles" that replaces the green... Much better stuff.. been around for 30 years..... This is NOT the NEW YELLOW that FORD has been using for the past 5 years... The ORANGE that FORD used in the 2010- 2020 era on MOST vehicles is the same as DEXCOOL used by GM for many years.. your right.. DO NOT MIX any..
	Like them all, but love the "B"s.

Acguywill Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 15 Jan 2024 Location: Vauxhall ab Can Points: 188	Post Options Post Reply Quote Acguywill Report Post Thanks(0) Quote Reply Posted: 1 hour 26 minutes ago at 1:04pm
	This engine is from the late 50s or early 60s so I am pretty sure it would have had green antifreeze in it forever. The stuff it had in it when I bought it was green and clean but I had no idea how long it had been in there so I changed it. The green stuff I put in was just regular heavy duty diesel engine antifreeze and the red stuff I topped it up with was the extended life stuff of the same brand which according to the label was acceptable. I guess I know better now.

SteveM C/IL Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Shelbyville IL Points: 8833	Post Options Post Reply Quote SteveM C/IL Report Post Thanks(0) Quote Reply Posted: 1 hour 19 minutes ago at 1:11pm
	What about Walmart's 150000mi....universal compatability....all makes and models foreign and domestic passenger and light truck

WF owner Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 May 2013 Location: Bombay NY Points: 5143	Post Options Post Reply Quote WF owner Report Post Thanks(0) Quote Reply Posted: 49 minutes ago at 1:41pm
	Are you sure your water pump is circulating coolant through the engine or that the thermostat is opening? When I read back to the original post, ten minutes of run time may not have warmed the engine enough to open the thermostat to mix the new coolant with the old.