Help Diagnosing driveline leaks (trans, diff, etc.) (fj62)

[fraserb]

Attached are some photos of the underside of my 1989 FJ62.
I can take a guess as to what seals need to be replaced, but I'd like some affirmation!

Some areas of concern:
Rear main seal
Pinion seals
Weird leak on top of transmission not sure where that could be leaking from.
And leak from side of transmission out of bolt.

I'll have to attach photos in multiple posts so the photos in this first post are of the possible rear main seal.

Super appreciative of any and all advice you all have to offer!
Thanks in advance and enjoy your land cruisers!!

 

[fraserb]

Pinion seal

 

[fraserb]

First weird transmission leak on top. Seems super odd that it could get there.

 

[fraserb]

Leak out of side of the transmission.

 

[OSS]

Every single seal and gasket on the vehicle is past due for replacement. You can’t go wrong replacing any of them - or all of them

 

[Godwin]

Some areas of concern:
Rear main seal

Not likely. An oil pan gasket leak will mimic a rear main seal leak and the oil pan gasket frequently leaks. A valve cover gasket leaking at the rear of the valve cover, oil running down the rear of the engine, may also be mistaken for a RMS leak.