Dannie
Ive been using straight 40 grade & it seems to work fine.
Dont use multigrade or synthetic.
I tried some 90 weight gear oil once & it didnt seem to last any longer.
The main problem seems to be heat & when it really heats up the oil runs fast through the nozzle.
I dont think there's any real need to use the "official Scott Oil," although their website may different.
Our good ol mate Peter Reid at Siam Superbike sells Scott Oilers so he might be able to supply official scott oil.
If this is not good enough then try my mate Chan Kok Pyng at
M-Technik in Singapore.
Davidfl
Keep The Power On