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#3222152 - 12/19/13 10:10 PM Dielectric grease or something else?
JHZR2 Offline



Registered: 12/14/02
Posts: 40258
Loc: New Jersey
I have a bunch of DC sae connectors for quick connection of my battery chargers to my less often used vehicles. Some are made of bright stainless, others are some metal with a corrosion resistant coating. The former look great, the later are showing some discoloration. I'd like to put something on them to keep the elements a bit further out and prevent corrosion.

My first thought was dielectric grease, but not sure if its the right thing. These connectors are just peeking out from underhood, but if the product separated and ran, it would be on my paint... Don't want that.

The product would need to prevent corrosion and preferably moisture from accessing the connections, not create a high resistance connection, and not run or bleed out.

Recommendations?

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#3222279 - 12/20/13 04:56 AM Re: Dielectric grease or something else? [Re: JHZR2]
Falken Offline


Registered: 07/30/12
Posts: 2630
Loc: Montreal, QC, Canada
I would have a rag that has a bit of vaseline in it, that way you could quickly buff it on and it won't run.

Also, vaseline is pretty safe.
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#3222651 - 12/20/13 12:30 PM Re: Dielectric grease or something else? [Re: JHZR2]
wayne50 Online   content


Registered: 06/03/05
Posts: 66
Loc: alabama
I thought that was exactly what di-grease was for. Just use a thin film and there should be no dripping. Just my .02

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#3222669 - 12/20/13 12:49 PM Re: Dielectric grease or something else? [Re: JHZR2]
JHZR2 Offline



Registered: 12/14/02
Posts: 40258
Loc: New Jersey
ok

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#3222677 - 12/20/13 12:55 PM Re: Dielectric grease or something else? [Re: JHZR2]
SatinSilver Offline


Registered: 01/24/08
Posts: 8000
Loc: Ohio
Spray them with Fluid Film which I think you've stated in the past that you have on hand. Not as messy as smearing grease everywhere.
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#3223439 - 12/21/13 08:28 AM Re: Dielectric grease or something else? [Re: JHZR2]
ARB1977 Offline


Registered: 06/12/05
Posts: 4879
Loc: North Texas
I use dielectric grease when ever I remove a connector.
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#3228931 - 12/27/13 06:57 AM Re: Dielectric grease or something else? [Re: ARB1977]
Char Baby Online   content


Registered: 05/25/05
Posts: 9099
Loc: ROCHESTER, NY
Originally Posted By: ARB1977
I use dielectric grease when ever I remove a connector.


Same here!
ATMOF, my BIL uses Dielectric Grease on so many things that, he claims that he is finding more & more uses for it including brakes & brake hardware(never failed yet!). And he works in the heavy duty truck field.
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#3229139 - 12/27/13 12:49 PM Re: Dielectric grease or something else? [Re: JHZR2]
daved5150 Offline


Registered: 02/04/12
Posts: 1
Loc: WNY
I've always used dielectric grease on my plow motor and solenoid connections with great results. Like everyone else has said, that's what its designed for...any outside electrical connection to prevent corrosion.

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#3229789 - 12/28/13 07:45 AM Re: Dielectric grease or something else? [Re: JHZR2]
Oil Changer Offline


Registered: 08/28/06
Posts: 2297
Loc: Michigan
Sorry to hijack, [email protected] but there is so much confusion concerning dielectric grease; I'm confused myself. So how about a game? List all the applications you use dielectric grease on.

I have only used the tube stuff by placing a small amount on the end of a spark plug and a little on the inside of the boot. I also put a little on every electrical connector I have apart. How many uses am I missing?

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#3230293 - 12/28/13 08:19 PM Re: Dielectric grease or something else? [Re: JHZR2]
JHZR2 Offline



Registered: 12/14/02
Posts: 40258
Loc: New Jersey
I use it on all electronic connections in my vehicles. Thing is, open and exposed 12v battery charger connections aren't permanently connected, is a bit different, at least at my first glance.

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#3231074 - 12/29/13 04:22 PM Re: Dielectric grease or something else? [Re: JHZR2]
Kira Offline


Registered: 08/19/10
Posts: 3841
Loc: Champlain/Hudson Valley
Hello, A smear on automotive lamps will reduce resistance and corrosion and ease removal. Kira

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#3232823 - 12/31/13 01:35 PM Re: Dielectric grease or something else? [Re: JHZR2]
George7941 Offline


Registered: 05/10/05
Posts: 1992
Loc: Toronto, Canada
Dielectric grease will work just as well as anything else.

The absolute authority on electrical contact greases is Nye Lubricants
http://www.nyelubricants.com/products/nyogel.shtml

Nyogel is recommended by GM and Ford to prevent fretting corrosion on electrical contacts.

Motorcraft XG12 dielectric grease for electrical contacts is manufactured by Nye Lubricants
https://www.fcsdchemicalsandlubricants.c...ategory=Greases
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#3278323 - 02/11/14 04:42 PM Re: Dielectric grease or something else? [Re: George7941]
buck91 Offline


Registered: 04/17/12
Posts: 2286
Loc: West Michigan
Originally Posted By: George7941
Dielectric grease will work just as well as anything else.

The absolute authority on electrical contact greases is Nye Lubricants
http://www.nyelubricants.com/products/nyogel.shtml

Nyogel is recommended by GM and Ford to prevent fretting corrosion on electrical contacts.

Motorcraft XG12 dielectric grease for electrical contacts is manufactured by Nye Lubricants
https://www.fcsdchemicalsandlubricants.c...ategory=Greases


Any idea what the difference bewteen the MC XG12 and XG-3 dielectric grease is?
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#3343146 - 04/15/14 04:51 AM Re: Dielectric grease or something else? [Re: JHZR2]
dnewton3 Offline



Registered: 05/14/07
Posts: 6823
Loc: Indianapolis, IN
This application (temporary el connections) is a great use for dilectric grease.

I use it for this very same purpose (for my Battery Tender connectors) as well as plugs such as the various trailers I use (RV, boat, utility).

It would have to be HOT (well above ambient temps) to make it run. And it wipes off clean with no residue typically.
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#3345938 - 04/17/14 08:37 PM Re: Dielectric grease or something else? [Re: Oil Changer]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6568
Loc: southeast US
Originally Posted By: Oil Changer
Sorry to hijack, [email protected] but there is so much confusion concerning dielectric grease; I'm confused myself. So how about a game? List all the applications you use dielectric grease on.


Here is one. I replaced a motherboard in a laptop and the connection with monitor was very poor no matter how many times I reattached the tiny plug. Remembering that DG fixed intermittent harness connection problem in my Subaru many years ago, I tried DG on the motherboard socket and it worked on the first try and works like a charm a yer later.

Could someone please tell me how exactly it works. If not, I will have to believe in miracles.

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#3346016 - 04/17/14 09:41 PM Re: Dielectric grease or something else? [Re: JHZR2]
Kiwi_ME Offline


Registered: 10/24/08
Posts: 1019
Loc: New Zealand
Well, it simply excludes oxygen from the connection slowing down microscopic electrolytic corrosion. For people with VW TDIs it was a good fix for driveability issues when used on the MAF connector, which had different metals each side.

I also use a tiny amount on every electrical connector, the only time it's given me grief is when I used it on an HDMI connector.

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#3346103 - 04/17/14 11:31 PM Re: Dielectric grease or something else? [Re: Kiwi_ME]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6568
Loc: southeast US
I understand that, but how does it explain instant results?

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#3346105 - 04/17/14 11:35 PM Re: Dielectric grease or something else? [Re: JHZR2]
Kiwi_ME Offline


Registered: 10/24/08
Posts: 1019
Loc: New Zealand
Because the connection must have been corroded.

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#3346853 - 04/18/14 07:28 PM Re: Dielectric grease or something else? [Re: friendly_jacek]
Kiwi_ME Offline


Registered: 10/24/08
Posts: 1019
Loc: New Zealand
Originally Posted By: friendly_jacek
I understand that, but how does it explain instant results?


Hmm, overnight I realized that you may not know that almost all electrical connectors are design to wipe the contacts clean on insertion. Any slight resistance that develops can causes galvanic corrosion at a microscopic level and small currents from certain types of sensors will not break through that.
In addition all underhood connectors should ideally be watertight, although you will find that those under covers carrying higher currents (fuses, relays, lighting) are not.

IMHO, connector design is one of the main drivers determining historic reliability of vehicle brands and is one reason why Japanese cars got better first. The legendary Mercedes W123 of the '70s-'80s used silver plated connectors with a heavy, sticky grease to seal them (throughout the vehicle,) while BMW only took care on critical components (ECU, TCM and ABS) and used relatively low-quality connectors on non-critical systems such as AC, window and power seat controls. Saab, Alfa and other Euro brands were similar.

I have a saying that "every electrical problem is a mechanical problem," and that is because the root cause of many failures in electrical systems is poor mechanical design, a result of the failure of the EEs to always select components appropriate to the environmental conditions, or appreciate the benefit of passing that responsibility off to the MEs.

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#3352743 - 04/25/14 11:16 AM Re: Dielectric grease or something else? [Re: Kiwi_ME]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6568
Loc: southeast US
Originally Posted By: Kiwi_ME
Originally Posted By: friendly_jacek
I understand that, but how does it explain instant results?


Hmm, overnight I realized that you may not know that almost all electrical connectors are design to wipe the contacts clean on insertion.


OK, are you saying DG helps to wipe the corroded surface on the metallic pins/contacts?

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#3382437 - 05/27/14 08:13 PM Re: Dielectric grease or something else? [Re: JHZR2]
andyd Online   content


Registered: 09/25/04
Posts: 5992
Loc: Marshfield , MA
Just exercising the connection will clean it . Or if you have a dab of De-oxit use that to clean connections.DG runs from vaseline to more exotics with silicone in them. It is used to stop corrosion by being air tight.Making the connection will displace it to make contact. After having to scramble to find a Jeep V8 wire set during a simple plug change. I use boot grease every time I mess with the plugs now.

When I finished with the new brake lines and bleeders on the Rat, I hit the fittings with chassis lube anything with threads, got greased. Same principle.
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#3382562 - 05/27/14 10:25 PM Re: Dielectric grease or something else? [Re: JHZR2]
AMC Offline


Registered: 10/17/10
Posts: 778
Loc: South Eastern, CT
I too put Dielectric Grease on everything including bulb bases, connectors, plugs and battery terminals. I recently ran out of my regular CRC dielectric grease and have been trying Liquid Wrench Dielectric anti-size. So far I am liking it and finding it very versatile. I dont use it in place of actual anti-seize compound but it is nice to know that it will function as an anti-sieze as well.

It is good stuff, easily available at your local Lowes store. Check it out: http://www.lowes.com/pd_549792-1409-L803_0__
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#3383243 - 05/28/14 03:55 PM Re: Dielectric grease or something else? [Re: JHZR2]
yvon_la Offline


Registered: 05/20/14
Posts: 1429
Loc: quebec canada
best is probably Allison atf fluid since it is tested for 300 hours for corrosion on copper but I doubt you ll find that avail in quar4ts since it is for big rig!
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#3383259 - 05/28/14 04:21 PM Re: Dielectric grease or something else? [Re: JHZR2]
JHZR2 Offline



Registered: 12/14/02
Posts: 40258
Loc: New Jersey
Dont think that would serve as grease very well...

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#3392109 - 06/08/14 11:01 AM Re: Dielectric grease or something else? [Re: JHZR2]
Raybo Offline


Registered: 02/14/09
Posts: 62
Loc: Clearwater ,Florida
I use this stuff. Been using it for years on C Band Satellite RF connectors. Fill them up and connect them Repel water and will not corrode. It lasts for years and has the best anti corrosion there is. Best electrical grease there is 100% synthetic & so pure you could eat it.

If you want something quicker Home Dep0t sells a great product called CSP (corrosion stop proetcetor) Excellent spray product. Its spray grease and does not smell and stays where you spray it and repels water. Hose off my suspension for years now with this stuff snd no under carriage rust. No squeeks or rattles. Door hinges, hatch hinges, locks,latches. Very good stuff. Made by PB Blaster.

http://www.redlineoil.com/product.aspx?pid=82&pcid=17

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#3392276 - 06/08/14 03:19 PM Re: Dielectric grease or something else? [Re: JHZR2]
HosteenJorje Offline


Registered: 05/26/14
Posts: 2483
Loc: Columbus,Nebraska
CRC makes,or did make, an excellent aerosol dielectric grease, but I haven't seen it on the shelf lately.Very good for sealing all electrical connections on automobiles.A little pricey.

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#3414976 - 07/05/14 02:43 AM Re: Dielectric grease or something else? [Re: JHZR2]
oilboy123 Offline


Registered: 12/05/03
Posts: 6941
Loc: Everett, Washington
I like dielectric grease myself.

This is a good product as well. I have used it on volume controls of radios and such. Went from static/scratch sound to normal volume control. I have also used it on slider controls where the signal was intermittent through the travel. Use it on computer ram connectors as well.

It is pricy, but a little tiny bottle will last forever because it goes on thin.....

http://stabilant.com/techt02h.htm


Edited by oilboy123 (07/05/14 02:43 AM)
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#3429518 - 07/19/14 07:10 PM Re: Dielectric grease or something else? [Re: JHZR2]
alternety Offline


Registered: 01/15/09
Posts: 158
Loc: Pacific NW
I don't think Stabilant should be viewed as a dielectric grease. The mechanism is completely different. According to the manufacturer, it forms a thin coating that becomes conductive where pressure points occur but insulates and protects everywhere else. Attributed to a unique molecular structure. I am not sure adding grease to this would be useful. But I would like to know. Grease blocks evil things, and is wiped clean at the contact points when inserting connectors. Stabilant, provides a thin protective coating but improves contact resistance. According to the manufacturer.

I have used the product for a long time and it seems to work quite well. It saved me the cost of major transmission and on-board computer replacement or work. I regularly treat connectors in my equipment before putting them into operation.

I would rate it as good stuff.

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