You would use 10W-40 Not just any 10W-40 will do it must meet the following Performance specifications:
API SG, SL/CF; JASO MA/MA-2; API GL-1
DOT3 from an unopened can.
A TRX-250R is a type of vehicle known as an "all terrain vehicle." What this means is the TRX-250R is designed as a lightweight vehicle that can be used to travel across all different terrains.
Use full synthetic 10w30 weight.
2.0 dohc turbocharged.
10w30 weight any major brand.
30 Weight Non-detergent Oil
If you mean a different weight then you're not very wise. Use the exact weight oil that Honda recommends. If you are referring to the brand of oil, you do not have to use Honda oil. In fact Honda does not even make oil their oil is refined by another company. You can use any major brand oil of your choice, as long as it is the correct weight.
Conventional 10w-30 weight
you can use standard ATV oil from places like tractor supply. or you could use a 30 weight oil
The type of oil grade to use on a VT1100 Honda shadow is 10w 40. There are several brands available that carry this weight and the best choice depends on the riders choices themselves.
Personal opinion really they both have they're goods and bads. I personally suggest a Honda for quality weight and speed depending on what type of vehicle your looking for
You need more info, if its a dual sport type bike, it will top out around 70 or 80