Home › Forums › Gen III / Gen IV › Diff fill plug question…there are two!

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    • Shannon Whitehead
      Keymaster
      March 2, 2016 at 2:13 pm
      Post count: 274799
      #283823

      Fill it from the lower fill hole. When the fluid starts to come out that hole that’s how you know its had enough. The top hole is for the diff cooler on the comp coupes.

    • Shannon Whitehead
      Keymaster
      March 2, 2016 at 2:15 pm
      Post count: 274799
      #283824

      Ok great thanks!

    • Shannon Whitehead
      Keymaster
      March 2, 2016 at 2:24 pm
      Post count: 274799
      #283827

      I’m not sure the exact amount but you will have some left over. Put the additive in first and then fill to the level of that hole. That’s what I was instructed to do by people more knowledgable than I am.

    • Shannon Whitehead
      Keymaster
      March 4, 2016 at 11:19 am
      Post count: 274799
      #284194

      Strech is correct, extra plugs are for the cooler lines and additive first then fill until is runs out.

    • Shannon Whitehead
      Keymaster
      June 11, 2025 at 2:29 am
      Post count: 274799
      #22531

      Okay there is one fill plug that has a tag on it that says, “limited slip lube only” then there is a second one at the top which I’m assuming I put the rest of the fluid in. I have seen people say the diff is full when the fluid is even with the bottom of the fill plug. Well, which fill plug are we talking about? That or can someone tell me the precise amount of fluid is supposed to be in the diff (including the 4 oz of limited slip lube)? Thanks!

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