Just to clarify. A torque converter can not drain out unless it is leaking onto the ground. They normally drain to the input shaft level and that oil goes to the sump which partially explains the higher level when engine is off. Checking the oil with the engine off is a waste of time other than to confirm there is oil in there. Drive and enjoy. No puddles under the car? No worries.

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Mark
82 300SD 110k
91 Caprice SS
92 Jetta TD
97 Cadillac Concours(300hp)
84 Celebrity 4.3L diesel