Oil range required with Ghea

[kyoshogit]

I've got a set of 1.2 & 1.3's for an FS2. I pm'd Ghea for viscosity suggestions, but they didn't know. I've got two sets of shocks, so can have two set-ups. I don't plan to race indoors at the moment, so say outdoor range at the moment.

Any recommendations? (I have some Associated oil, so probably stick with that brand)