I have had a look at a few set ups, I took the pistons from Neumann - simply because his appeared to be the same on virtually all the tracks he went to. That said he uses far heavier front oil.
I took the oil in ball park from the uk drivers running indoors.
The thing is that I have been driving mostly TC and 1/12 - and whilst I know what to do with them, I am 'at sea' so to speak with a buggy. That said - this is Waaaaay more fun