Doghouse Repair
Part name: oil filler nut tool with round inside "grippers" - best
Part number: 5102
Retail cost: $15.90
Your cost: $11.20
Description: oil filler nut tool with round inside "grippers" to fit the bore. This tool is the cats meow. It is far easier to use than the slotted tool.
The end of the tool fits a 26mm socket.
Empi packaged.

I know from personal experience that you can use an impact wrench and a 26mm socket on this to bust the gland nut loose, but you will most likely break the nut and the stand in the process.
of these to my order now.