Join Date: Jun 2008
Location: Brampton, Ontario, Canada
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Stupid question. Are you using an aftermarket oil filter or the OEM Ford/Motorcraft FL-2016? If you are using an aftermarket oil filter, discard it and start using the OEM filters from now on.
I have had MANY trucks that have passed through my hands with the exact issue you describe being caused by the use of an aftermarket oil filter (particularly the junk ones that use the one-piece cap, necessitating you to discard the OEM cap that will have to be repurchased when you switch back to a Ford filter on your next oil change).
The last three trucks that have passed through my hands with that symptom was fixed by the replacement of the oil pressure SWITCH, NOT TO BE CONFUSED WITH THE ICP SENSOR. This would be the switch located on top of the oil cooler, next to the oil filter housing and EOT (Engine Oil Temperature) sensor. For what it's worth, the oil pressure gauge on your instrument cluster is only as good as an "idiot light". This means it reads pressure. It doesn't indicate low pressure or high pressure. If it makes you feel any better, your engine would stop running if the lube system oil pressure were starved, because it would starve the HIGH pressure oil system that controls fuel delivery at the injectors. In lamens terms, this means the engine would stop running long before engine damage could commence.
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Ford Diesel/Senior/Master Tech who placed 2nd overall in Ontario on the Fix-It-Right-First-Visit score for 2010
....who works at a dealership that now employs SOME half decent looking female employees since they overhauled most of the administrative staff
....but STILL loves hot women with big boobies
....and STILL hates working on E-Series with 6.0L