Sealing washer size

[michael67]

Hi all! I've had my LR4 for a few months and it's time for it's first oil change under my ownership. I've pulled down most of the LR4 manuals, and I plan on performing the oil change the old fashioned way - through the drain plug, as mentioned later on in this thread:

http://www.landroverworld.org/forums/showthread.php?t=22797

However, I can't seem to find the sealing washer size, and the dealer here in Austin, Texas is no help. Anyone here know the size of the sealing washer?

Thanks,
Michael