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Best RTV?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Peeetah, May 5, 2001.

  1. Peeetah

    Peeetah Registered Member

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    Ok why does permatex use different adj, to describe the different RTV's oil resistance. the black stuff has excellent, the Copper has outstanding, the blue has superior...In everybodies experiance which color stops oil the best?
     
  2. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    I've used the blue, worked fine for me. Never leaked again after the application of it...never tried the other colors. I think they name them that way to make us all buy each tube to do the same job. See how much money they can get us to spend on the same thing.......

    "Suck Fumes Ford Boy"
    "I love my country, I fear my government"
    <A target="_blank" HREF=http://www.chevycagal.homestead.com/steph.html>http://www.chevycagal.homestead.com/steph.html</A><P ID="edit"><FONT SIZE=-1>Edited by ChevyCaGal on 05/05/01 06:46 PM (server time).</FONT></P>
     
  3. Waxer

    Waxer 1/2 ton status Author

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    I've always used the orange and had 0 problems. It's sealed water, oil, gear oil, fuel.....
     
  4. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    i always use blue and have had no problems i have used it to seal oil and water gaskets

    77blazer see it at<A target="_blank" HREF=http://community.webshots.com/user/ssmith6333>http://community.webshots.com/user/ssmith6333</A>[​IMG]
     
  5. CaptCrunch

    CaptCrunch 1/2 ton status

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    Black is suppost to be multi-purpose, Blue is generally designed for coolant and wp's, and cooper is the top of the line and if I remeber permatex right it is actually a gasket maker. Personally I think the best RTV you can buy is the mopar stuff (the ATF type...it is black) from any chrysler or dodge dealer. works mint!

    [​IMG]
    1987 Chevy K5 Blazer- 350 TBI
     
  6. Cavalry

    Cavalry 1/2 ton status

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    Skip all that parts store crap and get this stuff from GM. I dont have it in front of me for the PN but its black RTV in a "cheese wiz" can. Its the best stuff I have ever used and you dont have to squeeze the nasty half dried up tube.

    "There is a fine line between hobby and mental illness"
    Luke
    84 K5 [​IMG]
     
  7. Pugsley

    Pugsley 1/2 ton status

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    Copper is for high-temperature, but from my experience it works great on everything. My personal choice though is the gray stuff from Caterpillar.

    [​IMG]
     
  8. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    I've always used Ultra-Blue for places where oil is in direct contact with the seal, like diffs. I've never had a problem with oil leaks.



    <font color=red>PHOTO ALBUM-</font color=red> <A target="_blank" HREF=http://albums.photopoint.com/j/AlbumList?u=1289798>http://albums.photopoint.com/j/AlbumList?u=1289798</A>.......<font color=blue>TRUCK & HIKING PICS</font color=blue>
     

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