Chain drives can be a pain to maintain, especially if you drive in the wet frequently. I've been using DuPont teflon lubricant on my DR's chain... cheap stuff and doesn't attract dirt like chain waxes

I've looked at the Scott oiler but If I was so inclined, I would rather use the Tuturo oiler system, less complicated and would be the ideal solution for me if I ran in the wet.

https://www.tutorochainoiler.com/