Oil change in the differential

[ArturO]

As I was afraid, there are no shortcuts to unscrew the old oil filler cap.
Thank you for your help!
Arthur

[Les4048]

According to John Reid of Grantura Engineering use only Morris Lodexol XFS 80W-140 as no other oil has the additives required for this type of differential and also change it every 5000 miles. At the moment my diff refurbed by John has Castrol in it but I will be changing it as soon as I get the correct oil. The diff is now unbelievably quiet with no clonking