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What is your question?
what should normal oil pressure be when starting cold truck .just changed oil am running Castrol syntec oil
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Any brand - any weight > "Normal" oil pressure throughout ALL operating ranges > Somewhere in between minimum and maximum on the in dash oil pressure gauge! .. There is no nominal oil pressure reading in psi as it will 'vary' from one vehicle engine to the next vehicle engine even if they are the same type - and from low rpm to high rpm as well..