Anyone think it would be a good idea to add an oil sight glass? I did a quick search and found this one, http://www.billetproofdesign.com/12-gauge-sight-glass-style-external-fuel-gauge-steel-bung/.
Rather than tap into the head stock with the attendant contamination potential, I think I'd rather just cut off the dip stick from the threaded cap and use a separate "stick" to check the level. In the meantime, I've found (suggested by someone else) that inserting the dip stick from the left side of the bike and reaching over the tank seems to work better than trying to do it from the left side.
The bung would go on the right side of the at the appropriate location. I would flush the tank when I was finished. It would just require a quick glance when the oil was hot to check the level.
My method is to insert the dip stick while aiming low (for the oil, not the metal brack inside the tank, and then instead of threading the cap on, I press it down and unscrew it. As soon as the splines are aligned properly, when the leading edge of the thread on the cap runs off the leading edge of the tank thread, the cap will slip down into place with the threads properly aligned and you can easily tighten it without worrying about crossing the threads.
