351 durability
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Low oil pressure in and of itself is not an engine killer. Low oil pressure raises flags in many cases because it is indicating worn bearings.
During the oil embargo of the seventies, Cummins was looking for ways to make their engines more fuel efficient. One of the many fuel efficiency improvements that they implemented was LOWERING the oil pressure. They used a relief valve that regulated the oil pressure DOWN to a MAXIMUM of 15 PSI. This required less power to drive the pump resulting in less fuel usage. The engines lived and continue to live their normal long life with this oil pressure.
During the oil embargo of the seventies, Cummins was looking for ways to make their engines more fuel efficient. One of the many fuel efficiency improvements that they implemented was LOWERING the oil pressure. They used a relief valve that regulated the oil pressure DOWN to a MAXIMUM of 15 PSI. This required less power to drive the pump resulting in less fuel usage. The engines lived and continue to live their normal long life with this oil pressure.
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