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What additive will stop the leaking LSD?

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    What additive will stop the leaking LSD?

    Help!

    Anyone know if there is an additive I can put into the LSD of a 1988 325iC? It is not the drain plug that is leaking...I verified that. I don't want to mess up the limited slip gearing. Thanks in advance for your help.

    Tim

    #2
    Nothing.

    Either leaking from the cover or the speed sensor or half shafts.

    Clean it and locate where it's coming from. Speed sensor is a simple o ring, cover is easy to, half shafts are just seals they're simple just a bit more work.

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      #3
      I doubt there is really any additive that can actually stop a leak that has already occurred. if it is leaking bad, I suggest getting it resealed. If it is an extremely slow leak, you could try some stuff from your local hardware store. In my experience, it's total junk unless your leak is very small.

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      1989 325i - Project/weekend driver
      2002 325i - DD
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        #4
        Just something to swell the rubber a little bit is what I was thinking. If they swell too much, then I would take it all apart and reseal it. I am just trying to put it off since I just started a new job and time is very tight.
        Tim

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          #5
          Originally posted by goinstrong View Post
          Just something to swell the rubber a little bit is what I was thinking. If they swell too much, then I would take it all apart and reseal it. I am just trying to put it off since I just started a new job and time is very tight.
          Tim
          Depends on what's leaking and how it's leaking.

          Take a moment and find out, could be as simple as the speed sensor... And that's a 5 min and 50cent job.

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            #6
            I would add new seals and gaskets. But that's just me.

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              #7
              Originally posted by Farbin Kaiber View Post
              I would add new seals and gaskets. But that's just me.
              Afternoons work and not a huge cost. If you really want to save the LS unit, do it right.


              Originally posted by vlad
              Do you know anybody else who built that many bad ass E30s?

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                #8
                Originally posted by Farbin Kaiber View Post
                I would add new seals and gaskets. But that's just me.
                QFT

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                  #9
                  Originally posted by Farbin Kaiber View Post
                  I would add new seals and gaskets. But that's just me.
                  This. They are cheap.

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                    #10
                    New seals and gasket doesn't cost much...AT ALL. Just replace it.

                    I wouldn't put anything in my diff, engine, trans that would make gaskets swell up...That's just being lazy and not fixing the problem.

                    I have brand new spare seals and fluid if you're needing them.

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                      #11
                      Originally posted by Farbin Kaiber View Post
                      I would add new seals and gaskets. But that's just me.
                      Ahhhhhh yeah this buddy ^^^ lol . There is no sealer to stop your diff from leaking brah.
                      Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

                      garage queen 91 bmw 325is / 1972 Chevy El Camino 355 sbc 450hp

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                        #12
                        Originally posted by Hick View Post
                        Afternoons work and not a huge cost. If you really want to save the LS unit, do it right.
                        Elbow grease. Be sure you check the tolerances on the output shafts before you bolt it back up under the car.

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                          #13
                          If it's not leaking from the pinion seal, (driveshaft flange) it's easy.

                          t
                          now, sometimes I just mess with people. It's more entertaining that way. george graves

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                            #14
                            the adding of of:

                            Labor (~ 3-5 hours)
                            +
                            new parts (seals x3, O rings x3, surface gasket x1)

                            not leaking rear end.

                            For a non-worn and non-ancient rear end its quite a lot more hours and parts.
                            OBD1 M54/M52TU swap as a M50b25

                            Z4 non powered steering rack fits e30



                            Euro e46 2005/6 320d 6mt gearbox into E30 with M20 hardy and beck 1985 327s engine

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