What oil to use in 4 stroke dirt bikes?

There are two types of oil that are recommended to be used in a 4 stroke dirt bike. It is recommended that you use motorcycle transmission/gear oil in the transmission side and usually 10W-40 motorcycle oil in the other side. Some people, use 10W-40 in the transmission, but I don't do this and the factories do not recommend it.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.