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    Drastic drops/returns of oil pressure (5.4L 3v 2009)

    Background: I have a 5.4L 3-valve manufactured in 2009, with 195,000 miles. (Probably not relevant, the cam phasers were locked out a few years ago.) My wife was in a wreck (body damage only), so the vehicle sat for a couple of months until insuranced and body shop got it looking good again...
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