I personally use a high performance oil with a hi protection oil additive
eg
ravenol VSI + X1R
redline 5w40 +Break in additive 20CC/L
300V+ militec
whatevers easy to get and cheap/ leftovers from the next door car nut.
when the mobil racing 4T is on offer on my area , i'll buy it too.
generally i dont trust anything below 1300PPM of ZDDP for long term protection, its good to have a second safety net, but thats just me, im flickling fickle.
and oh, Shell ultra 4T dies on me after 90KM, dont ask how i ride em, it just ... overheats and i have to let the motor rest.