Each year I go through the same problem of removing the rear diff filler plug. Even with a 15/16 six sided socket it still seems to slip off, and end up having to use a persuader to get the plug out.
Looking for a solution and a better type of plug I found a company called www.powerenhancer.co.uk, they sell smart plugs The one that fits the rear diff is Part Number: Smart 695078811946.
What I liked about the plug is when you start to insert it and you reach the o ring it feels like you are tightening a nylock nut. The washer supplied is much bigger in diameter and covers a greater surface area.
The next oil change should be more straightforward Because of the greater depth of the hex head (10mm) no more sockets slipping off.
If you go through the same problems the smart plug may be worth considering as it certainly works for me.
Looking for a solution and a better type of plug I found a company called www.powerenhancer.co.uk, they sell smart plugs The one that fits the rear diff is Part Number: Smart 695078811946.
What I liked about the plug is when you start to insert it and you reach the o ring it feels like you are tightening a nylock nut. The washer supplied is much bigger in diameter and covers a greater surface area.
The next oil change should be more straightforward Because of the greater depth of the hex head (10mm) no more sockets slipping off.
If you go through the same problems the smart plug may be worth considering as it certainly works for me.