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oil pressure relief valve

  1. Oil Pressure Spiking

    Engine
    I have a 94 3.4L with high oil pressure. I'm using 5w30 as spec'd and just changed it & the filter with no change in the pressure. There were no shavings in the old oil. Pressure seems to drop to 75-80 after warming up for 20-30 minutes. On start up, it is maxed out. Autozone (here) does not...
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