Originally Posted by xlite
Joe, do you have first hand experience that is true? Mark Smith, top ultralight expert in the US, recommends it for Rotax full size airplane engines and I have been using it and other TCW3 formulations on my bikes and planes for years with excellent results. Is there any credible evidence anywhere that it causes wear or seizure?
Water cooled ultralight engines run much like boat engines....constant throttle with a high load and little idling.
Two stroke air cooled bicycle engines are run very differently.
Run what you want...the oil companies make different oils for different applications for a reason.