I\'m not sure about RX8\'s but i know i had an Issue with the quantity of 2 stroke oil being used when i had mine running (Tracy Couldn’t tell me the amount of flow the Kit was giving out and he said it was meant to be run on Aircraft at high RPM so I had measure it myself), after allot of reading up i was going to run RX8 jets with the smaller bores to try and meter it a little more but i had a problem with the Oil return on my Single fouling so that ended Play.
IMHO i\'d either stay with the stock set up or Go Fully Premix, you can do both but tbh what’s the point? Spend your Money on Top Quality Engine oil instead.