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dielectric grease ? #5436145 05/22/20 07:12 PM
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hardheaded Offline OP
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I am going to install a ignition module on my sons 04 bonneville and was wondering if i should put dielectric grease under the module before installing ? Thanks !

Re: dielectric grease ? [Re: hardheaded] #5436170 05/22/20 07:54 PM
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Jimzz Offline
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NO!!! Thats the wrong grease. You want thermal grease. You can find it at microcenter, bestbuy, or any place that has computer CPU grease. A little is all it takes so don't buy to much.


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Re: dielectric grease ? [Re: hardheaded] #5436205 05/22/20 08:29 PM
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gathermewool Offline
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Do you mean when you plug it in? Yes, dielectric grease.


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Re: dielectric grease ? [Re: Jimzz] #5436254 05/22/20 09:20 PM
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CT8 Offline
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Originally Posted by Jimzz
NO!!! Thats the wrong grease. You want thermal grease. You can find it at microcenter, bestbuy, or any place that has computer CPU grease. A little is all it takes so don't buy to much.

This.


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Re: dielectric grease ? [Re: hardheaded] #5436261 05/22/20 09:36 PM
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sloinker Offline
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If it's for heat transfer use heat sink compound. T he electrical connection doesn't require anything.


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Re: dielectric grease ? [Re: hardheaded] #5436302 05/22/20 10:36 PM
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Dave9 Offline
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In theory a good quality heatsink grease would perform a little better, but in practice silicone grease is good enough and is what's in the packet that comes with some GM ignition modules, but the contact area has to be clean, no corrosion buildup.

If you ordered OEM (or even aftermarket) but don't have it yet, I'd wait and see if it comes with grease.

Re: dielectric grease ? [Re: hardheaded] #5436309 05/22/20 10:56 PM
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P10crew Offline
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Dave the ignition modules came with the white high heat conductive paste for many many years. Thanks to the cal nazi’s mfg’s no longer supply the white paste. They supply of all things dielectric grease.
I would never use silicone dielectric grease to aid in heat dissipation. The white paste is available and I would only use that not insulating grease.
Another fine problem that the nuts in Cali gave the balance of the the 49 states..

Re: dielectric grease ? [Re: hardheaded] #5436381 05/23/20 04:50 AM
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Lubener Offline
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Originally Posted by hardheaded
I am going to install a ignition module on my sons 04 bonneville and was wondering if i should put dielectric grease under the module before installing ? Thanks !

Use heat sink compound to transfer the heat from the module to the mounting surface.


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Re: dielectric grease ? [Re: Dave9] #5436439 05/23/20 06:48 AM
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willbur Offline
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Originally Posted by Dave9
In theory a good quality heatsink grease would perform a little better, but in practice silicone grease is good enough and is what's in the packet that comes with some GM ignition modules, but the contact area has to be clean, no corrosion buildup.

If you ordered OEM (or even aftermarket) but don't have it yet, I'd wait and see if it comes with grease.


True. I read an article somewhere that compared plain ol dielectric grease and heat sink grease and reported only a slight improvement. The article went on to say just use the dielectric grease.

Re: dielectric grease ? [Re: hardheaded] #5436633 05/23/20 10:09 AM
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The heat transfer compound moften is a sylicon grease with metallic filler to promote heat transfer.


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Re: dielectric grease ? [Re: hardheaded] #5436677 05/23/20 11:21 AM
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hardheaded Offline OP
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So i should be installing some of this grease before putting the module in place. I wonder if Advanced Auto carries this thermal grease ?

Re: dielectric grease ? [Re: hardheaded] #5436703 05/23/20 11:58 AM
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OVERKILL Offline
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Originally Posted by hardheaded
So i should be installing some of this grease before putting the module in place. I wonder if Advanced Auto carries this thermal grease ?


You should be able to find Arctic Silver on Amazon or at a local computer store (if you still have one).


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Re: dielectric grease ? [Re: OVERKILL] #5436898 05/23/20 06:19 PM
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willbur Offline
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Originally Posted by OVERKILL
Originally Posted by hardheaded
So i should be installing some of this grease before putting the module in place. I wonder if Advanced Auto carries this thermal grease ?


You should be able to find Arctic Silver on Amazon or at a local computer store (if you still have one).


Interesting about the silver. My understanding is that the purpose of heat transfer grease is to fill in the air space between the mating components. Air is a very good insulator and heat transfer is greatly reduced. These compounds can't transfer heat any better than the components themselves in contact, so anything that can transfer heat as well as the components themselves will do. Some in the PC gaming world overclock their processors, generating a lot of additional heat, and use copper antiseize for this purpose. Some use zinc heat transfer paste but its just thickened zinc sun screen.

Re: dielectric grease ? [Re: willbur] #5436904 05/23/20 06:22 PM
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The zinc paste is using zinc oxide, correct? Not metallic zinc. Heat transfer or heat sink paste should be thermally conductive but electrically insulating.

FWIW Autozone near me sells the proper material, they call it "heat sink compound".


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Re: dielectric grease ? [Re: hardheaded] #5436905 05/23/20 06:23 PM
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Different heat compounds have different heat transfer coefficients... and the differences can be repeatably measurable, with the right equipment.


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