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Message: [QUOTE="Powerstroke Man 6.4, post: 1081886, member: 4573"] The oil lights on our trucks are switches and don't really measure oil pressure. They don't even have any connection to the PCM (only the dash cluster) I would get a real gauge on it to measure pressure. It could just be a bad oil pressure sensor. (straight from the 6.4 CTB) EOP (Engine Oil Pressure) • The EOP (Engine Oil Pressure) is a switch that closes a circuit to ground after engine oil pressure reaches approximately 5-7psi. • This switch controls the oil pressure gauge on the instrument panel. When pressure is above 7psi the gauge will read normal and if the pressure drops below 5 psi the gauge will show 0. •The information from the switch is not sent back to the ECM in any way and is to be used as a reference only. [/QUOTE]

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