Been using RedArmor at 50:1 in my OPE for years now, Stihl and Echo residential use, and it's definitely a clean burning oil that will clean out residue left by other oils. That tacky feeling definitely acts as a rust inhibitor for seasonal storage or even multi-year storage. I purged my equipment then sprayed a little unmixed RedArmor in all my OPE before I left my home for a multi-year CONUS mobilization, everything started up without issue after 4.5 years of sitting in my unconditioned storage shop in high humidity and heat. It was noticeably harder to initially pull over but once running it ran like it never skipped a beat. I am now giving Amsoil Saber Pro a try after watching your videos but I will keep the RedArmor on the shelf just in case.