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Rear diff leaking

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Roowhale, Oct 29, 2024.

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Oct 29, 2024 at 1:49 PM

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Roowhale [OP] Member

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Sorry i'm not mechanical inclined person so here's my noob question is my rear diff leaking on fill plug or on the drain plug?

Roowhale, Oct 29, 2024

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Oct 29, 2024 at 1:53 PM

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jmneill Well-Known Member

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The fill plug would be my guess, but there would a lot of venturi effect going on back there.
The easiest thing might be to hit the whole thing with brake cleaner then have another look after a day or two of driving.

jmneill, Oct 29, 2024

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MGMDesertTaco, t0p_d0g, Chew and 2 others like this.

Oct 29, 2024 at 3:30 PM

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InThePlains Well-Known Member

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Way above the fill plug, check the breather.

InThePlains, Oct 29, 2024

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Barsoom likes this.

Oct 29, 2024 at 5:32 PM

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Smacky2020 Well-Known Member

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Stock wheels and suspension. Random "utilitarian" mods featured on this great forum.

What does the driveshaft side look. Fluid could be leaking past the pinion seal and being pushed backwards as it warms up while driving. I'd be surprised if it's the fill plug.

Maybe start with completely degreasing it and check daily where it could be getting past.

Smacky2020, Oct 29, 2024

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Oct 29, 2024 at 5:45 PM

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Roowhale [OP] Member

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The drivershaft side is clean

Roowhale, Oct 29, 2024

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Oct 30, 2024 at 2:23 PM

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Roowhale [OP] Member

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It's the fill plug

Roowhale, Oct 30, 2024

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jmneill likes this.

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