oil psi help - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 06-05-2013, 04:36 PM Thread Starter
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oil psi help

truck has 217k miles an runs great after i had everything fixed on it lol. noticed today that my oil psi guage is reading on the n of normal. checked the oil an it was a quart low so i topped it off. i did put hot shot secret in it last oil change. its getting hot here in south carolina jus wondered if it normal an do you think it may be low psi cuz of the hot shot secert?

94.5 f350 dually
216k miles
straight piped
fuel shim
ts chip
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post #2 of 3 Old 06-05-2013, 04:46 PM
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I'm wondering if the PSI is actually low or the gauge is just dumb.

2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #3 of 3 Old 06-05-2013, 05:57 PM
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Unless you've modded the gauge, the factory OP gauge is really only a glorified idiot light. The setup does not use a sending unit that varies resistance with temperature, it only uses a pressure switch that is either ON or OFF depending on the setpoint (6 psi I think). The gauge is supposed to read mid-scale above that pressure. That all said, the gauges are funky. My 94's would do the same thing as yours (and anything in between). If you pull the wire on the switch (top of the HPOP reservoir on passenger side) and ground it, the gauge should read mid-scale. If it doesn't, there is probably a problem with the gauge itself or the wiring to it. Cheers!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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