I am on the train on the way back from London and just having a mooch about the site.

My 3.6 TDV8 07 is in at the moment getting a new alternator, I have asked that the turbo pipes get changed whilst it is stripped down, and an oil change - might aswell whilst it is in the garage.

It seems from various threads that there might be a second drain (sump) plug, something to do with the turbo, rather than just the obvious oil drain plug, is that right ??

If so where is it and what does it drain that the main drain doesn't ?

Ta muchly 2011 Range Rover Vogue SE

Do both. Same sump, but the oil return ends up by the 2nd plug which is normally overlooked. ends up caking up and you lose oil return from the turbos. Which is bad.

Open both and let them fully drain. If you have no proof it has been done then do a short service cycle and change the oil again in a couple of 1000 miles using the same method.  There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2021 Discovery 5 D300 MHEV commercial

one thing, be ready, not a lot of room and it drains straight onto the subframe....unless someone had drilled a hole through.. 2008 TDv8 Vogue in Java black x2
2006 4.4 Vogue se
2000 P38 They aren't all bad!
1996 D1 3.9 es
1996 Volvo 850 GLT

I put a hole in my L322’s subframe mainly so I could get a socket to the sump plug. ______________________________
Vogue tdv8 08MY poverty pack - wow

I just used to use a old cut up bottle to funnel it past the subframe  Sold - Bell a 2015 MY16 Loire Blue Autobiography 4.4 SDV8
Previously George a 2007 MY07 Java Black VSE 3.6 TDV8
Previously a 04 MY04 Defender 90