I have looked online at the Kymco 300 DT service manual( same as 200 DT). The oil spec can be a large variety depending on outside temp. It gets hot where I live (104F) , but not sure I need to run the 20-50w stuff. I plan on using a full synthetic oil. The lowest winter temp here is maybe 38F I’m guessing many 300DT owners just use a quality 5-40 or 10-40 weight oil. What are you guys using? I still have a case of full syn Vespa oil (5-40). I sure would like to be able to use it.
