Check also for oil leakage at the trans. filler tube where it enters the trans. case. Oil leaks from this location can be caused by an incorrect seal size. Correction may require seal replacement. Install the seal into the case before installing the filler tube.
If these first two causes have been eliminated, inspect the corner juction line between the oil pan and the sprocket cover. A slight gap must exist between the pan and the cover, the full legth of the juction. If this gap is not visible certain modifications must be made.
First, loosen the four bolts on the oil pan adjacent to the sprocket cover. Then, using a hammer and a blunt punch or drift, gently tap back the flange on either the oil pan, the srocket cover, or both. Continue tapping the flanges back until a slight gap is obtained. Once a gap has been obtained, replace the four loosened bolts with four of the second design bolts, Oldsmobile part No. 11502670. Torque is 12 ft. ld.
[color=#0040FF]There you have it folks, in all of it's long-winded factory glory. Just thought I'd do my good deed and post this here. I hope that it helps someone sometime.
Mike
TOA #70[/color]