Oil leak at dipstick tube flange fixed -with pics! - Ford Truck Enthusiasts Forums
I recently started leaking massive amounts of oil from the flange that holds the dipstick tube to the pan. As you may be aware, the flange is inserted from the inside along with the oring to seal it. I think it might be possible to replace that oring, but I went with the tried and true International repair kit.
Intl # 1846146C91 consists of:
Oring (small one for the dipstick tube where it slides in the flange)
Loctite Flange Sealer
Here's the gasket dimensionally if you need to make one in a pinch. 2 1/2" OD, 1 5/8" ID, and 0.031" thick.