Question about 2008 Toyota Highlander

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2005 highlander rear diff.leak at frnt seal has been replaced 2 times new rear yolk and seal

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In my opinion either the seal was damaged during installation or the surface are where the seal seats either has debris obstructing the seals ability to seal, the area is damaged from removing the seal and/or not being cleaned with emery cloth to ensure the surface is smooth. Seals do a great job but the area they seal must be clean and smooth or it is guaranteed that the area will leak. If the seal is sweating and not leaking, this is usually normal to an extent. If you don't see fluid leaking out of the diff. or onto the ground but it looks like the housing is moist below the seal but no fluid is present the seal should be fine.

Posted on May 27, 2010

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