Rear main or sump leak?

[duckmanseb]

3.0L 1KZ-TE , need opinions before i pull the gearbox out , what do you reckon ? , can take more pics if needed



Looking up

[andy666]

Impossible to tell from the current picture.
wash it down, test drive and re-access.

[stevei86]

What was the source of this leak in the end mate?

My 1kz-te looks very similar, oily sump but the back of the flywheel is clean. The leak seems worse if I leave it parked uphill too.

[boxhead55]

Yep rear main starts to leak around the 150 000 km mark and also sometimes the fipg (Form in place gasket) can get hatd and brittle and leak as well.
But I am going rear main.

[stevei86]

I had a leaking rear main replaced at the same time as the clutch only 5000k's ago. Either the mechanic stuffed the install of the new seal or its the sump this time.