So I have a had a look under the car today and saw what I think could be the cause of the leak. It looks like it can be replaced and has a square hole in it. It was very wet with oil. I have dried it off and no signs of any more oil coming out. Will this only leak oil when warm. Photos attached, hopefully right way round.

Sorry put this on wrong thread

Did you top it up with oil.? If I was you I’d top it up,it goes in the plug where it was leaking,as you top it up,as soon as it starts to run out that means it full.put bung back in give it a really good clean & run it for a few weeks & check it again. Andy.
21 Ford Ranger
Gone but not forgotten
Focus RS Red Edition
2015 RRS AB Fuji.
2014 RRS SC Santorini
2016 VW Amarok
2014 RRS AB Fuji
2012 RRS Red Edition Fuji
2015 Nissan Navara
2012 RRS SE Santorini
2008 RRS White
2007 RRS Santorino

So this is where you fill the diff with diff oil then??

I’m trying to work out from the pic wether that bung is the bottom one or the one half way up,,you fill it with the one half way up. Andy.
21 Ford Ranger
Gone but not forgotten
Focus RS Red Edition
2015 RRS AB Fuji.
2014 RRS SC Santorini
2016 VW Amarok
2014 RRS AB Fuji
2012 RRS Red Edition Fuji
2015 Nissan Navara
2012 RRS SE Santorini
2008 RRS White
2007 RRS Santorino

It’s definitely the bottom one. It’s the only one I can get to without lifting the car

Would this only leak when the engine is warm or all the time?

that is definitely the drain plug, the only thing you can do is to tighten it now until you can it to a workshop/change the oil yourself.

it will mostly leak when the oil in the diff is warm, or if there are big changes in ambient temperatures. --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport Supercharged V8 HSE Dynamic



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ