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Thread: 4d55 oil pressure

  1. #1

    Array
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    Offline
    Join Date
    09-04-2012
    Posts
    74
    Location

    Salem Oregon
    Vehicle

    1986 Dodge Power Ram 50
    Engine

    4G63-T

    4d55 oil pressure

    I'm getting 85psi on cold idle and about 70 when warm on the freeway. After it warms up it will drop to about 30 at idle. This seems excessive to me. Am I at risk of blowing seals?

  2. #2

    Array
    Status
    Offline
    Join Date
    08-24-2013
    Posts
    188
    Location

    Alexander City, AL
    Vehicle

    1995 Mitsubishi Mighty Max
    Engine

    4G64
    Thats about what mine used to be (using dino oil and when cold outside). Use a lighter weight synthetic if its worrying you. That will drop it significantly, but still give you shear strength and therefore the protection you need for the turbo and engine.

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