I serviced the Ls400 last weekend, and checked all around for anything unususal. So I came across some sippage from the right side housing of the transmission. It's not a rear main seal either.

What I'm asking for is anyone experienced that has accomplished this task. I figured remove the exhaust pipes and the park and neutral safety switich is a clear shot from there. Any advice would be appreciated, or similar issues would help.

 

Ok, so there is a seal behind the park and neutral position switch. If any one has wondered about a mysterious trans leak. There is another same exact seal on the opposite side.