I use Sta-Bil in all my other engines, motorcycle, lawn mower, etc. but I just haven't heard of much use in aircraft engines; maybe I am wrong and just am not in the loop.
Still not following - the 582 referred to has variants in thousands of snowmobiles and boats. I don't think the fuel knows what kind of engine it's running in, nor do I think the engine knows what kind of vehicle it's in. There is no difference. Yet you recommend running 100LL, which is contrary to Rotax's recommendations. I don't get it.