Transmission leak advise

R4Sedan said
I'm looking for some advise. My Challenger has a leak. It leaves a small puddle on the RH side of the car. I got under it was wet on the pan. It does have a fresh filter fluid re-usable gasket.
Its hard to tell if it's actually coming from the pan or dipstick tube, pump seal, etc...
Is there a good way to diagnose this put it on jack stands with car running? Bad idea?
On a side note Transmission works perfect. Should I just re-seal it. Need some ideas.
BTW it's a 383 w/a 727.

Thanks, Larry
Click to expand...
Update your dipstick seal to the newer boot style. They look like a rubber sleeve. They were developed to address a common leak area. The new style seal is ribbed. It is like 7 o ring seals in one.
Get a cast aluminum pan that has a thicker pan rail. They will seal on any style of gasket no problem.