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Hi all,

In Feb/March of this year I purchased a 2003 F250 6.0 with approx. 200k on the odo. The prior owner replaced the ICP & IPR with OEM parts. The day I purchased the truck on my drive home, I burst the ICP O-Ring and a river of oil. When I replaced the O-Ring with a NAPA one, the truck lasted about 3-4 months without bursting another O-Ring. When the next O-Ring burst, I ordered Ford OEM 2x14mm O-Rings and during my test drive everything seemed fine (I even gave her the beans!!!). On my way back home from a client, I developed another ICP O-Ring oil leak and replaced it again with a Ford OEM part. Using a torque wrench, I tightened the ICP Sensor to 12 LBS of torque to not overtighten (First O-Ring from Napa I did not Torque to spec). I am leaking some oil from my oil cooler as well. I also have always used 15W-40 Shell Rotella T6 in my truck. Always lubed my O-Rings as well with Silicon or Oil from truck.

Some other issues I have noticed is coolant spitting out of my coolant reservoir tank which makes me think that there are issues with exhaust gasses getting into the coolant system.

My biggest questions are:

1. Is the ICP O-Ring failure related to another failing part & if so what could it be? (Oil Cooler, Tube Clogging up, etc.???)
2. Any advice on how to stop pressurization of coolant system and coolant from spitting out of the Reservoir tank (New Sinister Diesel coolant tank w cap so its 100% not leaking)

Thanks for any help!!!
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