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The Milodon 7-quart pan requires a bolt-on pickup, a matching Melling high-volume pump, and a windage tray. Due to No. 5 main's large clearance, DMR recommended using its oil pump shim to ensure sufficient pressure. During testing, the Olds always had at least 50 psi with hot 10W-30. Also remember that the oil pump driveshaft goes in from the bottom rather than the top.