And any idea how to fix it on my 04 disco 2…. Thank you

 

Looks like engine oil. Rear main seal? Valve cover gaskets?

As an aside, do you not have O2 sensors?

 

It's on his list as I recall.

 

Thanks for the replies !! And yes my disconis missing O2 sensors which I plan to install soon. Got them from amazon yesterday and I just pit some penetrating oil on those bolts (were too hard stuck).

on the leaking part, its actually towards the front of the truck, just ahead of the transmission box. It looks loke leaking at the seams. Any idea if I should take it apart( if so will try all easier options first). But just curious at this time if this is something I should be worried about urgently and what are my options

 

If the leak is around where the transmission bellhousing mates to the engine block, then I still say either valve cover gaskets or rear main seal. Check the back of the cylinder heads for oil as that's easier than checking for the rear main seal.