Quote:
Originally posted by Bob In Ct
Earl:
High volume oil pumps mean higher pressure. There is such a thing as too much pressure. Excessive pressure is of no value to rings, bearings and cams, but it will move seals. Be careful.
If you insist on the HV pump, consider 5W-30 synthetic, avoid the 20W-50 stuff.
Bob
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Wrong. Maximum Pressure is determined by the spring in the bypass valve. Ford spent a fortune developing the oiling system in their motors. Unless you have opened up all the bearing clearances, or know more than ford's engineers, stick with the regular volume pump. All the extra volume just gets spit out the bypass valve in the pump anyhow.