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Thread: Dielectric grease on connectors?

  1. #1
    Senior Member beeman's Avatar
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    Dielectric grease on connectors?

    I have seen varying recommendations on this.
    Some say don't dare get it on the male/female pins of a connector since it is an insulator. Others say coat everything with it, then connect the connector.
    I did apply it liberally to the connectors on my injectors...do I need to unplug them and clean it all off?
    MK3.1 2004 Mach 1 donor. ABS, PS, TC.
    GTM #304 LPE 525hp LS3
    2000 C5 Lingenfelter LS1@489hp
    1999 Corvette FRC/Z06 track car

  2. #2
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    You're probably ok.

    All greases are lousy conductors, but dielectric grease is specifically designed to keep the contact surfaces from oxidizing or corroding (and therefore becoming a bad connection).

    Plenty of additional detail here: https://www.w8ji.com/dielectric_grea...ive_grease.htm

  3. #3
    Senior Member
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    I only use dielectric grease on my boat, but it will not hurt anything. I wouldn't bother taking them apart and cleaning.

  4. #4
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    I use it on all connectors, particularly on the bullet connectors on my British cars. Haven't had a problem in 20 years.

  5. #5
    VRaptor SpeedWorks, LLC's Avatar
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    I wouldn't worry about cleaning it off...or putting any on in most cases. It's not going to hurt anything, but it is kind of a mess if you would ever have to work on the connectors you apply it to. All of the engine bay connectors should already be sealed/weather tight, so no need for it.
    Shane Vacek
    VRaptor SpeedWorks, LLC
    www.vraptorspeedworks.com
    Turn-key GTM, SL-C & Ultima GTR Built to Your Specs!
    Offering a full line of GTM Upgrades and Custom Parts

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