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Has anyone used AT-205 Re-Seal on their 5VZ-FE motor?

Discussion in '3rd Gen 4Runners (1996-2002)' started by DLO_Houston, Sep 3, 2024.

  1. Sep 3, 2024 at 5:32 AM
    #1
    DLO_Houston

    DLO_Houston [OP] New Member

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    Hi folks, I'm trying to address one of the most common, long standing issue on these 5VZ-FE engines - oil drips under my 4Runner! I have already completed the valve cover gasket replacement on my 4Runner, but still after some time witnessing some new seepage making its way down onto the oil pan and eventually onto the ground.

    I know the rear main seal is another area of leakage, but my motor has 360K+ miles, and not sure it warrants the cost of pulling the motor to get to that seal.

    So a couple questions for those that have already dealt with this isssue:

    1) Are there any other areas on the 5VZ-FE block besides the valve cover and rear main seal that are common known sources of leaks?

    2) Has anyone tried using AT-205 Re-Seal? I "read" that it works, but I would like to hear from someone that has really used it, and not some shill for the product!
    [​IMG]
     
  2. Sep 4, 2024 at 6:38 AM
    #2
    negusm

    negusm New Member

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  3. Sep 4, 2024 at 6:44 PM
    #3
    Trekker

    Trekker Regular Member

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    I'd look at the oil cooler, that is a simple one to fix and it's not uncommon. Oil pump also go on occasion, but that isn't much better than the rear main seal leaking.
     
    DLO_Houston[OP] likes this.
  4. Sep 4, 2024 at 9:44 PM
    #4
    Hungryhawk

    Hungryhawk New Member

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    Southern CA
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    I first used it in my Honda Pilot at around 150,000 mile when main rear seal started leaking again. Rear seal first started leaking around 100,000 mile but switched to mobile one High Mileage Oil. Those oil leak conditioners worked for years and that was the engine oil I always used
    The second main seal leak started around 200,000 miles and adding AT 205 again did not fully work so I also added another Main Seal Leak product. I forget its name, but label said specific for main seals. The combinations worked and the leak stoped.
     
    DLO_Houston[OP] likes this.

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