Yeah, it was a beer fueled question, but sounded good when I asked it.....cause overfilling really won't have any affect on cold pressure...I don't think so anyway. BUT, over filling does have a detrimental long term affect since as the crankshaft rotates it will churn the oil, causing aeration and eventually sustained foam will form. This can lead to overheated motor oil, oxidation and a loss of oil pressure. Spongy aerated oil is hard to pump. It starves the engine and critical lubricated surfaces. Perhaps this is why many people turn their bearings to crap.
Also when I said standard fill, I was kind of assuming that if you had a remote filter and an Accusump, that you added enough oil to bring the level up to the full line on the dipstick....
Mikey