I am sorry that I dont have a definitive statement, nor a list of Rotary motor endorsers for Auto-Rx. The biggest concern we have with running Auto-Rx in the Wankel Rotary design has to do with the introduction of the oil with fuel prior to injection to the combustion chamber. The lanolin esters mostly responsible for the cleaning action in piston driven motors, is not compatible with gasoline. The lanolin ester does not blend with gasoline, which could be a problem. This is the reason we state that ARX is not compatible with 2 cycle motors where the oil is combined with fuel and fed through the intake. So based on this alone, we dont know if the ARX would be successful in the rotary.
With respect to the Auto-Rx capability to slowly dissolve carbon build up, it would work great. If you have a unit that is destined for a rebuild and want to experiment, I am sure that I could comp you a bottle or two. But I cannot guarantee any product results, plus or minus. A primary ester used in ARX has wide acclaim as the base of jet engine lubrication. So a lot of the formula tells me it could work great in a wankel. But the lanolin ester may be a concern as stated above.
