yeah if its leaking at the pan the only way to correctly fix it is pull the pan which means pulling the motor. i had this problem on my 94 and just cleaned it up really good and jb welded it. but now that the motor is coming out of that soon i will correct it the proper way

 

It looks like I will have to give the new repair kit a try. If I am lucky it will correct the leak. Thanks for posting the part number for me, that makes finding the right parts a lot easier. Thanks again for everyones help on this!

 

My early 99 f250 SD 7.3 sprung its first ever oil leak after 185,000 miles. After calling Ford for the "O" rings, priced at $4.75 each, two required and affter finding out that the engine has to be removed to remove the pan I called International and they have the "O" rings for 56 cents each. The parts person there didn't know of any kit available to repair. After reading several posts, I decided on the fuel tank sealer method. I first found I could tighten the nut on the pan almost a half turn. Took the truck out and ran it...Still leaked. I bought a tube of Quick Seal from Wal-Mart, cleaned up the oil and residue on the nut, sanded the area around the nut and applied the sealer. It's like putty, needs to be kneeded, then applied...sets up fast and can withstand 500 degrees F. It's drying as I write this and will run the truck later today. I'll post the results. If it works the cost was under $5.00 and about 30 minutes of time.
Jeff

 

So... uh, did you ever get the problem solved?

 

try going to a web site called powerstrokehelp.com, there is alot of good info on repairing ford powerstokes.

 

I was able to out in a new O ring by holding on to the flange piece with a bore cleaning brush for a .45 cal gun...just the right size...the pushed the flange into the pan...picked out the old O ring...then slid new O ring around flange and pushed the flange back into place. I think that my leak was because the big brass nut was bad not the O ring...so I replaced that too. So far...5 miles...no leak.

 

Since this old thread has been revived anyone with a leaking dipstick
tube flange should be aware that Guzzle now offers a repair kit. LINK