Reccomendations for Oil R3T. Amsoil?

[TriumPhil]

I stand corrected on the Amsoil oil's weight.

 

[Mittzy]

I use Motol 7100 10w40

 

[Jag]

My owners manual say castrol 10w40 4T motorcycle racing fully synthetic motor oil for cooler weather and 15w50 for hotter weather. Problem is castrol does not make 15w50 4T fully synthetic oil so you can go with their 10w50.

I use 10w50 for spring oil change, then 10w40 early fall oil change.
Changing your oil twice a year is cheap insurance to me!

Make sure it 4T because you don't want friction modifiers in your oil when you have a wet clutch.

 

[rocketboy3]

Should you use ZDDP in a wet clutch application - I like the idea of smoother shifts but won't this stuff make the wet clutch slip?