USE Synthetic ATV OIL, it comes in various weights. Valvoline makes it, but Lucus makes a good oil but it is 8 to 10 dollars a quart.
5w30w full synthetic diesel oil
5w30w
Polaris four stroke oil is a 0-40w synthetic.
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.
A simple answer it's oil for your ATV.
No difference. Automobile motor oil is 4 stroke oil just like the oil you use in a 4 stroke ATV. Just purchase the correct weight of any name brand. I recommend you use 100% Synthetic in any air cooled engine.
It is a combination of synthetic oil and conventional oil.
No, you can even mix synthetic with conventional oil. It will do no harm at all.
That's okay.
SAE 10w30 full synthetic.
1.9quartz, full synthetic
5w-20 of any synthetic motor oil brand.