Z-man -
MDN is correct, no thread sealer should be used with AN fittings. Try this: Disconnect the fitting that's leaking (by the way, are you sure it's the hose end fittings that are leaking and not the adapter that screws into the block?), clean both the male and female sides and look carefully for damage on the sealing surface. That's the cone-shaped part. If no damage, put it back together and tighten it down. If there's damage on the sealing surface or cleaning/reinstall doesn't work, there is one more thing you can try before you start replacing hose ends. Get some soft aluminum conical seals of the correct size (AN-10, correct?) and place one on the male connector on the
oil adapter, then reconnect the hose. This basically creates a sandwich between the two sealing surfaces and often is an effective fix for a small scratch/gouge. Earls (and others) makes these conical seals, but I had good luck by calling up a local aircraft maintenace outfit. Not only did they have what I needed, they gave them to me!
Good luck.