Replaced the oil filter adapter housing gasket today w\ the new revised\redesigned Ford part.........................
Good thing I did..........this is why Ford revised this gasket as shown in pictures below.
This sapsucker was getting ready to blow out & cause a major coolant leak due to the plastic deteriorating from heat cycling thus compromising the sealing rings so I caught this in time to not get stranded from this gasket failing. You can clearly see where the plastic had started coming apart (the bulges) & the coolant sealing rings was starting to collapse inward...............
This gasket is the original production Ford oil adapter gasket installed on the engine assembly line thus is 16 yrs old. Why Ford originally designed this particular gasket using plastic is beyond me...........especially when both the 4.6L 3V engine block & oil filter adapter housing are made from aluminum alloy thus no advent of galvanic corrosion from coolant\liquids contacting dissimilar metals..........
The oil leaks were coming from the oil port sealing ring failures on the adapter side of gasket (you can see where the rings had flattened out on both oil ports thus couldn't maintain oil seal while under pressure thus oil seeped out by the bottom adapter bolt--this bolt head was clean while the rest had dirt stuck over them from wind spread oil--what most thought was coming from the oil pan gaskets). Oil sealing rings on block side of gasket were still good. This is from the plastic underneath starting to deform from heat cycling under pressure.
Refilled coolant (saved in 5-gal bucket.......fresh coolant from prior new radiator\water pump install) & reinstalled same oil filter (was waiting on this work getting done before I had car serviced.......she's due) & started her up & got radiator burped\topped off then checked for leaks..........all good. Put her on the ground & drove her for a while to get her good & hot then parked back at home & rechecked all once more..........all good, oil filter is clean & dry (oil would leak down to bottom of oil filter & form droplets.......the telltale sign of this oil filter adapter gasket going bad) & no coolant leaks anywhere w\ system under pressure at full temp.
Gonna check in AM & finish cold coolant top off as needed.
I am so glad I procrastinated & didn't pull this off while I was replacing the radiator\water pump & use the old Ford designed plastic gasket.........
I would highly advise folks to get this new Ford OEM redesigned oil filter adapter gasket installed ASAP if you haven't already changed this out.........you may be riding on a ticking time bomb waiting to go off.
7 years in the making but I finally got this small oil leak fixed..........only leak on the engine.
