From what I can gather Rotella is or was classified as a diesel oil which is a heavy duty oil very suitableas a motorcycle oil. We can't get rotella in Aussie land but I use a well known 15-50 Diesel with excellent results and have been using this after trying all the super synthetics with terrible results ie bad shifting, noise and etc. Ater 20,000 kms still would not use anything else but diesel oil it is the best!
