MAT1955
Well-Known Member
@s197richie agreed. I do not have data on initial oil pressure on startup of recent engines BUT my 2024 and 2026 Mustang GT's initial oil pressure readings on the gauge were pretty high, I'd say about 4 bar that drops to 2 bar when hot. When we built racing engines we pre-filled the oil filters for lubrication AND to avoid what we called "oilshock". When we built the racing engines we found that the initial shock of oil pumps shooting oil through the oil filters at start-up would do varying amounts of damage to the oil filters ranging from putting some of the oil filter's filter media into the oil stream to blowing oil filters open. We never had a case of that after pre filling filters.
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