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Old 01-01-2012, 09:24 PM   #1
caracal
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Join Date: Nov 2011
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Vehicle:
2011 wrx

Default Rear Diff Plug Sealant Stuck Inside

I just took my rear diff plugs out, and inside the threaded holes there is hardened gray sealant formed in a circle. I assume it's the Three Bond stuff the manual recommends which comes from the factory. This is the first oil change for this diff.

The stuck sealant is located where the end of the plug would've been. It looked like a crush washer at first, but then I saw pieces of it break off.

I don't know why they would've put so much sealant, and put it at the end of the plug, I thought it was supposed to be on the threads.

I put my finger in to clean it and it's quite hard, it only breaks off in a little pieces.

Is this sealant safe if little pieces fall inside? It seems impossible to clean it off the threads perfectly. Anybody had this happen to them too?

I cleaned it as much as I could then refilled it. Used Red RTV since I didn't have the three bond stuff. I think Red RTV should be good enough?

Also I have 6000 miles, and the magnet had quite a lot of buildup, about 1/4 of an inch of shavings. Is this normal?
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Old 01-01-2012, 10:10 PM   #2
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You should use no sealant and you should NOT worry about the old sealant as metal gears meshing at OMG pressure care not about brittle plastic.

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