I have had numerous BMWs, both R and K bikes. New filters for those bikes often came with a new crush washer for the drain plug. If there was no washer in the filter box the parts guy would offer one for a nominal price. More recently I have been riding Japanese motorcycles and have yet to see a crush washer in the filter box nor has any Japanese dealer parts guy ever offered one. I did not see any reference to crush washers in your how to article. Do Japanese crush washers not need replacing? They do exist. My
DL 1000 has one, so did my VFR800, and my KLR 650.
Anyway I would recommend paying close attention to the crush washer when removing the oil drain plug. These little boogers tend to stick to the bottom of the crankcase and can then fall into the oil while the slippery stuff is draining out. If this happens and you don't notice the washer is gone you might install the drain plug sans crush washer which is not a good idea.
DL 1000 has one, so did my VFR800, and my KLR 650.
Anyway I would recommend paying close attention to the crush washer when removing the oil drain plug. These little boogers tend to stick to the bottom of the crankcase and can then fall into the oil while the slippery stuff is draining out. If this happens and you don't notice the washer is gone you might install the drain plug sans crush washer which is not a good idea.