@@MJF85 when I changed the diff. fluid last summer ( 2022 - & thanks to your video ) - there was only 1.5 litres inside the diff. & I think it hadn't been topped up for at least 50k miles - After draining, I had to put around 3.5 litres in to the fill level , so it was around 2 litres short but still going !!
@GregVirgoe Hi Greg, less than you might think, I'm sure I bought 3 litres but had plenty left, if I remember right it only took about 1.5litres. This was on my self build camper I did 4 yrs ago, thanks for sharing your vids 👍