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Thread: Engine oil in my big block

  1. #1

    Engine oil in my big block

    Hi I have notice low oil pressure at idle in my engine. I'am using royal purple 20w50 synthetic is this normal or do I need to go with a different oil?

  2. #2
    What is your oil pressure at? What was it before?

  3. #3
    Senior Member RACING JUNKIE curtisreed's Avatar
    Join Date
    Feb 2004
    I don't believe it is the oil brand in any way. There are so many variables that have to be eliminated, the above is a start. Did the oil get contaminated with fuel really bad in any way? Have you changed filters since this started? Is this street driven or just a drag car? Why 20w50, are the clearances loose?


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