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  1. #1
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    Nov 2001

    Dielectric grease VS Vaseline

    Iím rebuilding my water-cooled rig and Iím adding a peltier. I canít find the dielectric grease to insulate the socket on my mobo. I read somewhere that some people are using Vaseline instead. If some one knows where can I buy dielectric grease or know if Vaseline is safe on mobo, I would appreciate any insight on this subject. Thanks

  2. #2
    Member robertm's Avatar
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    Oct 2001
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    You should be able to get dielectric grease from an auto supply.

    I would stay away from vaseline myself.

  3. #3
    petroleum jelly is working great for me! All it is is lower weight waxes. Cleans away easily with alcohol.

  4. #4
    Senior Member RoadWarrior's Avatar
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    Vaseline could get a bit runny if your case happens to get warm, and get everywhere (like in connectors and things where it will be a bugger to chase out) I think the other stuff is more stable at the temp range we'll want it for.

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  5. #5
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    Nov 2001

    Wink

    Thanks guys, I will try auto shops.

  6. #6
    Member ocean's Avatar
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    I'm using the same silicone grease I use on my scuba gear. Seems to work ok. Stay away from the siilicone grease sold at plunbing supply stores. Too runny.
    I'm not so sure I understand everything I don't know about this stuff.
    Need to update this someday. :cool:

  7. #7
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    If you have a Home Depot near you they will have it or an Auto Zone.I got some small packs for like $.30 at Auto Zone.

  8. #8
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    I WOULD NOT use Vaseline if i was you because it melts from very low tempratures, if you put it there it will melt and run every where

  9. #9
    Originally posted by xhwfed
    I WOULD NOT use Vaseline if i was you because it melts from very low tempratures, if you put it there it will melt and run every where
    Well why would you want to use vaseline on something that is going to be running way below room temp. My rig is running around 0 deg. C. You can bet the pet. jelly is very stable at this point. I got both dielectric grease and pet jelly but when I went to clean up the dielectric grease it took acetone. I am not going to put acetone on my mobo. I would not like to try and RMA a mobo that has dielectric grease all over it. My warranty still has a good 7 months on it! Pet jelly will wash away easily with alcohol that is why I use it.

    Now if you put pet. jelly on the top of the pelt you can bet it will run as that side is very hot, now why would you worry about condensation on that side anyway.

  10. #10
    Senior Citizen (aka old fart) Silver's Avatar
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    Dielectric grease is readily available at automotive stores. On todays electronic ignitions it is used to keep the spark from arcing under a spark plug boot to ground. I.E. it is put on the inside of the spark plug boots whenever they are pulled or replaced. Might explain why many have a miss, did'nt use it. I did'nt in the beginning but the car had a definite miss. Opened the hood one night and watched the fireworks around the sparkplugs.

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  11. #11
    Arctic Silver Senior
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    A number of folks have reported green CPU pins from Vaseline. I'd stick with dielectric grease.
    Knowledge is useless, itís what you do with it that counts.

  12. #12
    Member
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    Sep 2001
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    manitoba
    I am working on a system that will hopefully go down to -20c, will pet. jelly freeze at this temp? will it expand like water?

    thanks for any help in advance

  13. #13
    Member
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    i'm using pet jelly. works fine for me. my room is pretty hot and it works just fine.
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  14. #14
    Originally posted by Colin
    A number of folks have reported green CPU pins from Vaseline. I'd stick with dielectric grease.
    This does not make sence since pet jelly is a pure hydrocarbon and does not react with metals at all. If they got "green" pins it must be because they put something else on it.

  15. #15
    Senior Member RoadWarrior's Avatar
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    Hmmm come to think of it, green pins sounds more like condensation reacting with the copper and tin of the connectors in the socket.
    Folder in disgrace. Folding rigs may be back online eventually, just as soon as real life gives me enough breaks.

    Black Belt Ubercloxx0r

    "Even though large tracts of Europe and many old and famous Folders have fallen or may fall into the grip of OCAU and all the odious apparatus of [H]ardOCP rule, we shall not flag or fail."

    "We shall go on to the end, we shall fold on the Newcastles, we shall fold on the Northwoods and Prescotts, we shall fold with growing confidence and growing strength on Venice, we shall defend our Forum, whatever the cost may be, we shall fold on the Winchesters, we shall fold on the Bartons, we shall fold on the Applebreds and Thunderbirds, we shall fold on the Coppermines; we shall never surrender!"

  16. #16
    Arctic Silver Senior
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    If the Vaseline was not doing it's job and condensation was the result, you would get green pins. The folks I know that have experienced this are not noobs. Use dielectric grease.
    Knowledge is useless, itís what you do with it that counts.

  17. #17
    Originally posted by Colin
    If the Vaseline was not doing it's job and condensation was the result, you would get green pins. The folks I know that have experienced this are not noobs. Use dielectric grease.
    Probably didn't use enough. Maybe they are not noobs now but they may have been then? Pet jelly is parafin, other wise known as wax. My granni uses it to seal up jars of jelly but sometimes she screwed up and didn;t seal it all the way, it then got moldy. Toilet seals are made of wax also. Wax is a good sealer if used correctly. If one cannot figure out how to seal up the pins with parafin then one will prbably screw up with dielectric grease also. Use what you want I just know that dielectric grease was a ***** to clean up.

    The only probalem I see is not having H2O flowing over the pelt and yer friends probably did this and the heat from the pelt melted a bunch of the parafin away from the pins. They then figured ,"What the hey." Crank it up!


    Since you are recommending dielectric grease so highly what do you recommend to clean it up with if he has to RMA his board or chip?

    Acetone will eat away his mobo and components as also toluene. Alcohol will not dissolve it but it will dissolve parafin(pet jelly), I know I have had to clean it up from my chip and MOBO before. Works like a charm.
    Last edited by ol' man; 03-19-02 at 01:17 AM.

  18. #18
    Arctic Silver Senior
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    Pelts require conformal coating and insulating the motherboard. An RMA is out of the question. The same goes for CPUs since all but the latest crop of Xeon's require the use of the supplied thermal pad to keep the warrenty intact.
    Knowledge is useless, itís what you do with it that counts.

  19. #19
    Originally posted by Colin
    Pelts require conformal coating and insulating the motherboard. An RMA is out of the question. The same goes for CPUs since all but the latest crop of Xeon's require the use of the supplied thermal pad to keep the warrenty intact.
    Yeah right.

    My H2O block requires a "comformal" coating also.

  20. #20
    Without ICE on it and coolant flowing.

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