4cycle
quaker state motor oil
My TaoTao 110cc ATV holds 455ml or ~15.5oz of oil (almost a half quart). Be sure to drain the oil the unit is shipped with and replace with some good fully synthetic ATV oil.
Read the user manual and concern with your mechanic.
10w40-15w40
it dosent take oil its one of the only cars that take KY jelly.
The gear oil is on the opposite side of the bike from the oil fill. There are plenty of YouTube videos on it. You're going to see a few medium-sized bolts there. One is the drain bolt, and one of them is a fill bolt. If you don't have a filter that narrows down to a tiny nozzle, make sure you get a bottle equipped with one (many 80w90 gear oil bottles are tall and slender and come with the pointy, cone-looking end).
If it is a 2 cycle then use only 2 cycle oil mixed with the gasoline. If it is a 4 cycle use SAE 10w30 synthetic unless the manufacture recommends a different weight.
20W-50
Quality depending. a good branded quart of oil is priced around 15-20$. One thing you CANNOT cheap out on is oil.
If you buy Yamalube, it will tell you on the label what the ratio is.
yes 2 stroke in the bottle on the handle bars and oil in the trans.