If the oil squirter isn't installed, I would suspect that you would have low oil pressure even when cold.
I would suspect the oil pump or oil pump seals 1st.
FYI, the oil pump seals can be damaged while installing the oil pump and I know as I done it more than once. The oil pump seal that goes into the block has to be inspected to make sure it wasn't pinched or cut while being installed.
Find out what the color of the oil pump seals that were installed.
Original oil pump seals were yellow, but have been updated to red. Aftermarket black oil pump seals are NEVER recommended.
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Eric Hi Performance Automotive Service (formerly OVO or Old Volvos Only) Torrance, CA 90502 hiperformanceautoservice.com or oldvolvosonly.com
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