additives etc.

[Pirate_Freder]

so right now i am planning on running distilled water with pentosin blue anti-freeze(volkswagen stuff) and some iodine. should that cover it? also what are the proortions? 50% antifreeze if i remember correctly, but how much iodine?

[RIG RIDER]

From what I have read on the boards it's 10% to 15% antifreeze, 2 drops Iodine, and distilled water. I could be wrong though.

EDIT:Where in Oregon? I grew up in Medford. I miss the rain here in Arizona.

[ReD.SkY]

rig rider is right, but i would rather use zerex instead of antifreeze

[Pirate_Freder]

i'm in portland :D

and i want to use antifreeze because i will be chilling part time via chilled air through my rads. which presents a problem :(, i just read some people talking about running windshield wiper fluid and ethyl alcohol in sub-zero situations. what is the best mix for that?

[citronym]

I've used water wetter, zerex and regular glycol and im gonna stick with the latter. Water wetter and zerex have no advantage over antifreeze in my experience.

[Otter]

Yes. 5% antifreeze might even be enough if you've got only copper and brass in the loop.

You might also add a few drops of Jetdry. It's basically soap that doesn't foam and should boost your performance slightly by reducing surface tension.

[kapster]

i used 90/10 and 2 drops of dishwashing soap. no probs so far, havent messed with loop in 6 months.

[jamesavery22]

Hey Pirate_Freder where'd you get the VW AF? How much? And is it propylene glycol?

[voigts]

I bought my VW antifreeze from a local VW dealer. It is also found under Pentosin online, but I am pretty sure it is ethylene glycol, not propylene.

[bryan_d]

Hey Pirate_Freder where'd you get the VW AF? How much? And is it propylene glycol?

If you want propylene glycol, use the Sierra Brand with the Dog on the lable. That is what I will be using when I get my system back up. I originally wanted to get out of water but no one wants to buy my parts locally and I am afraid to send anything over the net.

http://i1.tinypic.com/of7y2v.jpg

Bryan D

[voigts]

does anyone know what color that sierra is?

[jamesavery22]

does anyone know what color that sierra is?

If that stuff is blue Im buying some asap. Dunno why but I am just sick of a dull green loop...

[Wicked Klown]

rig rider is right, but i would rather use zerex instead of antifreeze



Well seeing as Zerex anti-freeze offers nothing or say Dex-Cool, it really doesn't matter which you use just how much you pay. In a car it may make a small difference but not when using it in a computer seeing as we will never get as hot as a motor will.

[Bugsmasher]

The Sierra is a standard light green/yellowish from the time I used it. Quick caution about using the low-tox (propylene) style antifreeze- use some form of anti-growth. I didnt....and can officially say its a pain in the arse to break down and clean growth out of a system.

On the Pentosin/Blue Ethylene Glycol based antifreeze the best price I have found for it online is at Pap.parts.com

Pentosin G11 at Pap-parts.com (http://pap-parts.com/prodinfo.asp?number=G%20001%20100)

Make sure its the G11 you are getting if you want the blue. This is the older Pentosin made for mid 90s and earlier german cars. The newer G12 is a pinkish color.

On the ratio of antifreeze to water I suggest erring on the side of caution. Its better to lose a very very slight amount of performance instead of having corrosion/growth build up in your system. I would normally suggest 15% for copper/brass only systems and 25% for any system with other metals in contact with the loop. Keep in mind that will include any metals inside your pump if they are in contact with the solution as well.

[citronym]

IMO if your using glycol antifreeze 15% is a bit much for a similar metal loop. It won't hurt anything other than your temps, however. Personally I've never seen corrosion using 5% antifreeze.

[jamesavery22]

Well seeing as Zerex anti-freeze offers nothing or say Dex-Cool, it really doesn't matter which you use just how much you pay. In a car it may make a small difference but not when using it in a computer seeing as we will never get as hot as a motor will.

Zerex is better at inhibiting galvanic corrosion. Its made for cars with aluminum blocks and copper rads. Has the same inhibitors that AF has, just more of em. They recommend 10% + distilled for a loop with copper and aluminum.

[Aidenswarrior]

Zerex is better at inhibiting galvanic corrosion. Its made for cars with aluminum blocks and copper rads. Has the same inhibitors that AF has, just more of em. They recommend 10% + distilled for a loop with copper and aluminum.


that just means more stuff to **** up your heat transfer. Dog safe Antifreeze +distilled +iodine +coolcases blue dye= FTW

[jamesavery22]

that just means more stuff to **** up your heat transfer. Dog safe Antifreeze +distilled +iodine +coolcases blue dye= FTW

Don't follow you. How dows a 10/90 mix add more **** to your loop than a 25/75 :confused:

[skou]

From what I have read on the boards it's 10% to 15% antifreeze, 2 drops Iodine, and distilled water. I could be wrong though.

EDIT:Where in Oregon? I grew up in Medford. I miss the rain here in Arizona.

Rain in Arizona? That is just a silly rumour, to keep the tourists away. 128 days and counting!

Rig Rider, where in Az?

Oh, for a copper/ copper-brass rig, you don't need antifreeze. I've been runninng distilled water + 3 drops of dish soap + 3-5% rubbing alcohol.

steve

[citronym]

It is still possible for corrosion to occur, however unlikely.

I tried several differnt coolant solutions before I settled, thats probably your best way to go too.

[Pirate_Freder]

woah, thread exploded :p. k soooo. seems to have conlcuded that i hsould run zero antifreeze.hmm, so until i start chillin gmy water i guess i will run distilled+couple drops of iodine+dye. sound good? also do you guys know what to run in chillers (sub zero in celcius)

[Otter]

Don't follow you. How dows a 10/90 mix add more **** to your loop than a 25/75 :confused:
He means the Zerex itself. It's thicker than water and its thermal properties aren't anywhere near as good. I asumme the point was that 10% is more than 5%, but maybe I missed something.

[jamesavery22]

He means the Zerex itself. It's thicker than water and its thermal properties aren't anywhere near as good. I asumme the point was that 10% is more than 5%, but maybe I missed something.

True. Zerex should only be used when you have Al And Cu in your loop. I came up with 25% since if you have Al and Cu and want to use AF you should use more than the normal mix, 20-25%. 25/75 of AF/Distilled will probably have very close to the same viscosity as 10/90 Zerex/Distilled. The different between 25% AF and 10% is very small. I could tell obvious color difference but not thickness. So I'm guessing flow rate differences would be negligible.

[Otter]

Why shouldn't Zerex or other racing coolants be used in all copper and brass system?

The problem with 25% antifreeze isn't just the viscosity; it's the thermal conductivity and especially the specific heat. The more water in the mix, the better it will transfer heat.