A local repair shop checked my oil pressure with an external guage and informed me it was way within tolerance. They did not tell me what the pressure was however. My oil pressure indicator inside the vehicle does not register exceedingly high but very average. It does not have lbs. but just bars on the guage. It registers about in the middle or a little less.
It appears I finally solved my oil leak problem(s). The leak was in two places from what I can determine. The oil filter adapter was leaking no matter what "0" ring I installed. It also leaked around the adapter bolt head after trying several different types of washers. I removed the oil filter adapter. I purchased an insert from Ford (Part #FIAZ-6890-B. I installed this in the hole in the block where the oil adapter bolt had been. I then installed three different sizes of Fram oil filters, PH16, PH43 and a PH8A. They all leaked no matter how tight I dared tighten them. I tried a Motorcraft FL-1A and tightened it down as tight as I dared. It did not leak! However, I then noticed the oil pan was also leaking. The pan was leaking in the direct proximity of the oil filter which made it very difficult to discern where the oil was coming from. I carefully removed a couple of pan bolts one at a time and added some Permatex Ultra Grey RTV Silcone Gasket Maker into each bolt hole and on the bolt threads. I carefully screwed them back in taking care not to over tighten them. I let the material cure for 24 hours before starting the engine. I drove the Motorhome 25 miles and no leakes! So, that said, I hope I have the problem solved.
Thank you to everyone who patiently and kindly gave me suggestions.
I was having this same problem and just replaced the filter with the Motorcraft and it stopped leaking...for almost two months. It started leaking again and I tried to tighten it.
Like the first time when I installed it, the filter moves strangely when I tighten it, as if the boss or adapter are loose.
But this time the leak didn't stop.
So I bought another motorcraft, but I can't find a Ford part
#FIAZ-6890-B suggested in this thread.
Is there another name for that part? Is it called a oil adapter replacement?
I am going to try to tighten the bolt in the existing adapter as I saw mentioned in another thread, but don't know how long or if it will work...
Last edited by Gruffbanejoe; 06-13-2013 at 01:52 PM.
The mentioned part number is a block insert to allow a filter to be installed sticking straight out from the block.
It may work in a motorhome but definitely won't fit the crossmember in my F-250.
If the 'O'ring that seals the adapter to the block is damaged no amount of tightening will help.
Get a new O-ring and a sealing washer to go under the banjo bolt.
Fit the filter to the adapter so you make sure it won't contact the frame or lower radiator hose before you tighten the adapter back down.
Yes thanks I finally figured that out.
However torquing the bolt in the existing adapter stopped the wierd moving and torquing both the filter and the bolt fixed the leak, at least for now. If it happens again might try the part.