My oil pressure gauge usually starts out low and works its way up to 40. If I rev it, the pressure will go above that, but s soon as it warms it stabilizes at 40. I use 30 weight oil.
I'm assuming all the hydraulic lifters were removed and cleaned, with cylinders and plungers kept together.
There were issues with !940 356 engines not getting sufficient oil to the lifters, so some modifications on the lines from the oil filter were advised.
See post#30
https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=5878&viewmode=flat&order=ASC&type=&mode=0&start=20 I subsequently found my oil filter was plumbed backwards. Look for the IN and OUT stamping on the filter. I think I used a mirror so it was probably on the bottom.
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