Anyone familiar enough with the 4L80E to know what's going on when the torque converter drains when the vehicle isn't used for a few days? Thanks, Sixto 87 300D

The seals are hardened. Put it in neutral for 20-30seconds before trying drive or reverse, fluid doesn't circulate when it's in park.

Pump does not work in Park? what sort of transmission is this?

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

dodge is the only ones i ever remember that the pump did not circulate in park.i believe the 4l80 is pretty similar to the old turbo 400 in which case there is a check valve in there that holds the fluid from bleeding out .my old chevy if i drive it every week or so no problem but if it sets for a couple months it will drain the converter and then basically overfill the trans and it will leak out on the floor.