Well on my 8.25 the fill plug is always seeping a bit of fluid.. It has one of those Plastic / rubber type push in plugs - - not the thread in type. I have changes to a different plug and still the same problem.

It's impossible to have too much fluid as I have filled it with the correct amount and I has seeped so much for a while it as to be a few ounces under.

Thoughts to stop the leaking?


Should I try soaking the plug in the parts washer solution? I have done that be accident before and Made rubber stuff expand.


Thanks! Greg

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Greg, would it be possible to remove the cover, and either thread the hole to use a regular plug, or weld on a "bung" with threads?

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Does the 8.25 have a vent? I don't know diddly on most rearends just wondering if it's not vent properly and leaking out path of least resistance.

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83 B-150 slant 6,4 speed. 79 B-300 360 pathfinder 4x4. 74 W-300 318 4x4 git-r-done 80 B-100 sl6,4speed

I think the vent is integrated with the junction block for the brake lines. At least thats how it is on my 8 3/4" rear.

Yes this has a vent - Some have a vent like the 8.75's and some have a separate vent tube.. I should check it for blockage though.

Thanks, Greg

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