KobaltKour
Regular
Unfortunately there is no Traxxas in Australia on Ebay or in stores. Hopefully this brand isn't too different.I haven't tried this in my guhong yet, but I have shock oil mixed with silicone spray in my zhanchi and the cube is very good, smooth, quiet, yet still very fast and cuts corners well.
If you go with diff oil, go for traxxas diff oil. http://www.ebay.com.au/sch/i.html?_nkw=traxxas+diff+oil+&_cqr=true&_nkwusc=traxxass+diff+oil&_rdc=1