Posting on behalf of a friend, not my car - well here goes:
He recently replaced the head because of a chipped valve. In trying to remove everything from the engine, the turbo oil feed line would not come out of the engine side (came out of the turbo just fine). Well, re-assembly went rather well and we got everything hooked up and the car started just fine. Idled down and ran like a top for the mile or so we test drove it.
When we pulled back in the driveway I noticed a pretty heavy dripping from around the transmission. When we looked under the hood, we found that the area where the rubber hose is crimped on to the hard line where it passes to the right of the head for the turbo feed (that wouldn't come out) was spewing out oil pretty heavily.
My (our) question: What is the best way to fix, considering the hard line would not budge even when we had great access to it? I was thinking that we could cut out the middle section with the rubber hose and use some plumbing fittings to join the two halves together. Similar to a "fuel line repair" they sell at parts stores: