Yamalube 2s and 2r difference?

[MS460WOODCHUCK]

What is the difference in these two oils? Can either be ran in a saw?

 

[KenJax Tree]

I think the 2s is semi synthetic injector oil and the 2r is full synthetic racing oil

 

[MS460WOODCHUCK]

I think the 2s is semi synthetic injector oil and the 2r is full synthetic racing oil

So the 2s is a no go for chainsaws and 2r is what you would run in chainsaws?

 

[KenJax Tree]

Yup