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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

Thread: Dorman Oil or filter caps Reply to Thread
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  Topic Review (Newest First)
08-18-2019 07:35 AM
bismic I have used Dorman bolts before, but didn't even want to do that. Dorman quality is pretty bad IMO. Thanks for the post Jimmy.
08-17-2019 10:54 PM
Dorman Oil or filter caps

I have had three trucks now with oil leaks at oil filter cap using Dorman caps. The same cap is used for HFCM filter. The filter cap shrinks and the O ring doesn't seal. Two were just seeping but one quit running when HPOP ran out of oil and seems to be OK after a new cap, oil fill, and mess clean up. You can tell it is a problem as a Ford/IH cap gets hard to turn the instant the O ring gets into top of housing, Dorman cap can be run down to stop with little more than hand tightening. The Dorman caps fit the threads loosely before the O ring makes contact where OE caps have little loose motion.

All these people had used Wix integrated cap filters and then realized how much more expensive those were and went back to standard filters and cap. AutoZone, OReilly's, and others have Dorman caps in stock.


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