Maverick1776
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I'm in the process of changing out my liquid that has been in use for over 4 years now.
I'm currently cooling an i7 3930K @4.5Ghz. Soon I would like to water cool my GTX 1070 once there are blocks available.
I don't remember what liquid is in use now. It was part of a swiftech setup. The liquid is clear.
I read things online about people using 50/50 automotive antifreeze, thermaltake liquids, or even just non-conductive water with additives.
What's the best coolant out there ?
I have a 3x140mm fan radiator in push/pull config. Swiftech MCP35X pump and reservoir. Swiftech block for the CPU.
Any recommendations would be really appreciated. My CPU isn't where it used to be, heat wise. Real Temp GT shows my CPU hitting 63-65c while playing Doom (2016) for hours. Low 40's while idle. I may replace the thermal paste as well. Is Artic Silver 5 still the best ?
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bcavnaugh
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Re: Best coolant for water cooling ?
2016/06/20 13:52:01
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ragevirusqq
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Re: Best coolant for water cooling ?
2016/06/20 13:54:37
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Best is going to be subjective. it depends on the blocks and fittings that you use. Also, The radiators and metals that they are made out of. Some liquids react differently to different metals. Thermaltake radiators for example are all aluminum and pretty low quailty. There is warning on some of the larger fluid manufacturers asking that you do not use their fluids with Thermaltake rads. This is pretty rare though. If you have quality - all copper rads and blocks you can use anything you want. Mostly looks dictate this unless you are doing LN2 or phase change or something. I always use Mayhems, EK, Primochill fluids and have never had an issue.I prefer the look and color of Mayhems and always get god temp results, just my opinion. Ek fluids are made by Mayhems and rebranded. This in my mind means they have been tested by both companies and EK parts play nice with Mayhems fluids. I have mixed, dyed and changed a ton of different fluids and colors together just to see what i can safely use in my own systems. I have never had an issue with the pastels but some of the nano particles will get stuck in dead zones and stop fitting threads etc. Its pretty easy to clean out. Also, Any clear tube will eventually turn color regardless of the fluid. This doesnt mean the fluid is bad it is just chemicals and heat mixing together over time.
You will find a ton of info on this around forums. Most of it conflicting and uninformed.
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owcraftsman
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Re: Best coolant for water cooling ?
2016/06/20 14:52:13
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Maverick1776
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Re: Best coolant for water cooling ?
2016/06/21 19:10:37
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Thanks for the responses guys. The tubing I have is black in color, so the color of the liquid won't matter to me. I just want something that is high performance and pre-mixed. I don't want the hassle of mixing diluted water with anything.
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Dukman
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Re: Best coolant for water cooling ?
2016/06/21 21:33:24
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Im planning on running distilled water and use some EK concentrate to add a little color. Im also running black tubing, but I wanted something more than just clear water visible in the reservoir.
I thought about getting the EK premix, but started doing the math. A gallon of water and a couple bottles of concentrate is cheaper than several bottles of any premix.
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WackyWRZ
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Re: Best coolant for water cooling ?
2016/06/22 09:28:54
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I agree with just the distilled water and silver coil OR distilled water with a few drops (4-5) of PT Nuke PHN. http://www.sidewindercomputers.com/peptpcobi1.html If you really want to go pre-mixed I think you can get Primochill pre-mix fluids from Amazon but I can't speak to how good they are. As far as heatsink compound - go with MX4 or Noctua NT-H1 - Arctic Silver is OLD.
post edited by WackyWRZ - 2016/06/22 09:31:00
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nateman_doo
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Re: Best coolant for water cooling ?
2016/06/23 07:21:17
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I would go with mercury. I hear it transfers heat quite well being liquid metal and all ;)
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Dukman
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Re: Best coolant for water cooling ?
2016/06/23 08:53:34
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nateman_doo
I would go with mercury. I hear it transfers heat quite well being liquid metal and all ;)
Just overlook any well known health hazards and focus on potential superior cooling properties. 
post edited by Dukman - 2016/06/23 08:57:19
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the_Scarlet_one
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Re: Best coolant for water cooling ?
2016/06/23 08:57:23
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Silver kill coils are a great idea, as long as there is no aluminum anywhere in your loop.. If there is, you'll severely regret adding it in. Just verify you don't have any aluminum parts.
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owcraftsman
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Re: Best coolant for water cooling ?
2016/06/23 14:46:13
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Scarlet-Tech
Silver kill coils are a great idea, as long as there is no aluminum anywhere in your loop.. If there is, you'll severely regret adding it in. Just verify you don't have any aluminum parts.
That is a good point Scarlet let me add if the fluid comes in contact with aluminum as it circulates that's a no no, If fins are aluminum but tubes and reservoirs that carry the fluid are copper then there would be no issue such as Aqua computers Airplex. Actually it's hard to find any rads or waterblocks for that matter that have aluminum coming in contact with the water these days even Koolance who was notorious for this in the past has put it in the past.
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bcavnaugh
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Re: Best coolant for water cooling ?
2016/06/23 15:10:56
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owcraftsman
That is a good point Scarlet let me add if the fluid comes in contact with aluminum as it circulates that's a no no, If fins are aluminum but tubes and reservoirs that carry the fluid are copper then there would be no issue such as Aqua computers Airplex. Actually it's hard to find any rads or waterblocks for that matter that have aluminum coming in contact with the water these days even Koolance who was notorious for this in the past has put it in the past.
Koolance Hardware is all I use now for about 5 years and never had any aluminum in any of my Koolance Hardware. Though you can still buy aluminum Hardware from Koolance.
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RainStryke
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Re: Best coolant for water cooling ?
2016/06/23 23:59:31
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Scarlet-Tech
Silver kill coils are a great idea, as long as there is no aluminum anywhere in your loop.. If there is, you'll severely regret adding it in. Just verify you don't have any aluminum parts.
It also causes a corrosion in nickle, I would avoid the silver coils and just keep up with regular maintenance by flushing the system out once every 6-8 months. I've always just kept to distilled water with whatever color dye I feel like making it.
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bcavnaugh
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Re: Best coolant for water cooling ?
2016/06/24 08:01:49
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RainStryke
Scarlet-Tech
Silver kill coils are a great idea, as long as there is no aluminum anywhere in your loop.. If there is, you'll severely regret adding it in. Just verify you don't have any aluminum parts.
It also causes a corrosion in nickle, I would avoid the silver coils and just keep up with regular maintenance by flushing the system out once every 6-8 months. I've always just kept to distilled water with whatever color dye I feel like making it.
You also do not use Silver Coils with Koolance LIQ-XXX Liquid Coolants with Koolance Products.
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RainStryke
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Re: Best coolant for water cooling ?
2016/06/24 10:58:10
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owcraftsman
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Re: Best coolant for water cooling ?
2016/06/24 19:51:55
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@RainStryke This is news to me thanks for the enlightenment. I wonder why I haven't seen this issue with my nickel blocks? I always use a coil but this gives me pause for thought. Ostrich takes head out of sand...... 
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dwoodward
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Re: Best coolant for water cooling ?
2016/06/24 22:19:58
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For those bashing AS5... I recently used it in a pinch on a rig, it still dropped temps 15C... So maybe it didn't drop them 18C... Whatever. AS5 is old as hell, but it's still relevant.
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bcavnaugh
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Re: Best coolant for water cooling ?
2016/06/25 06:59:05
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ty_ger07
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Re: Best coolant for water cooling ?
2016/06/25 11:26:40
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I tried distilled water on one of my refills. It didn't work for me. I started to get a white biological growth plugging things up after a few months. I went back to using Feser One clear fluid; even though it cost more, it lasted much longer with less maintenance. There are many things I didn't want to add to distilled water -- to solve the biological growth issue -- simply because I was afraid what would happen to my nickel plating. I would rather pay more for something which works well for a long time. I plan to change my tubing over to rigid tubing and will try out Koolance fluid when I do. The Feser One fluid has started to get hard to find online for some reason.
post edited by ty_ger07 - 2016/06/25 11:28:53
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bcavnaugh
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Re: Best coolant for water cooling ?
2016/06/25 11:44:13
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ty_ger07
I tried distilled water on one of my refills. It didn't work for me. I started to get a white biological growth plugging things up after a few months. I went back to using Feser One clear fluid; even though it cost more, it lasted much longer with less maintenance. There are many things I didn't want to add to distilled water -- to solve the biological growth issue -- simply because I was afraid what would happen to my nickel plating. I would rather pay more for something which works well for a long time.
I plan to change my tubing over to rigid tubing and will try out Koolance fluid when I do. The Feser One fluid has started to get hard to find online for some reason.
This is my Flushing Kit:  Once a year I drain my coolant and filter it out twice and then reuse it for another year. Then I change the coolant every other year. Cost a little more but it is worth it.
post edited by bcavnaugh - 2016/06/25 11:46:14
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bcavnaugh
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Re: Best coolant for water cooling ?
2016/06/25 11:50:23
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To make it easier to change my tubing I now use Quick Connects. So all I have to do is remove one tube and then cut a new piece and put on the Quick Connects.   
post edited by bcavnaugh - 2016/06/25 11:52:51
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TECH_DaveB
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Re: Best coolant for water cooling ?
2016/06/28 14:20:51
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They did state that is was nickel plating+silver coil+Copper Sulfate.
Copper Sulfate is the first gen PT Nuke, there is a different mixture now, don't remember what exactly it is, but it was designed to play nice with silver coils.
Wasn't that Galvanic Corrosion doc released after that batch of blocks that got recalled due to poor nickel plating, that clogged a bunch of pumps and looked like shrapnel floating in the loop?
I have used a setup like this for years and never had an issue, Distilled water+silver coil+new PTNuke (silvercoil friendly version) no algae, no corrosion. I do not think this will be a discussion that will ever be truly settled, because there is always someone who uses the "correct" pre-mix coolants and their stuff turns into a gummy mess, and someone with distilled water with algae, or a silver coil, and/or copper sulfate and corroded blocks.
I am also fairly confident some of these issues can spring up more often based on proportions used as well.
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ragevirusqq
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Re: Best coolant for water cooling ?
2016/06/29 12:22:37
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Thermaltake rads are aluminum. Just in case you see the price and think wow these are affordable. they are not and do not perform as well either.
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Gutternutz
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Re: Best coolant for water cooling ?
2016/07/11 15:31:11
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snapbeaver
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Re: Best coolant for water cooling ?
2016/07/23 19:55:26
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flush/clean ALL WC parts prior to assembly, then use pure water + propylenglykol as coolant.. nothing else, no biocide, no kill coils I often add a inline filter the first 24 hours, which i later remove never ethylene glycol, or glycol containing HOAT or OAT = bye bye nickel plating in a hurry I have seen people online using glycol based coolants, and then adding a biocide containing citric acid = mess btw>If i am not mistaken the D5 housing is made of aluminum (so most people do have alu in the loops), but i can very well be wrong Hey look a squirrel!! tired nite Hey look two
post edited by snapbeaver - 2016/07/24 11:04:58
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jnohnu12
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Re: Best coolant for water cooling ?
2016/07/30 00:21:00
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owcraftsman
Distilled/Ultra Pure Water and silver coil avoid coolants, dyes and additives. Flush new radiators use 10% vinegar and distilled water. If you need a color buy colored tubing otherwise buy plasticizer free tubing.
If you prefer function and longevity over bling this is the way to go.
I second this
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jnohnu12
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Re: Best coolant for water cooling ?
2016/07/30 00:21:30
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ragevirusqq
Thermaltake rads are aluminum. Just in case you see the price and think wow these are affordable. they are not and do not perform as well either.
not all of them are.
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