Just for the record, I ran Stihl orange bottle 2 stroke oil in my 029 at 50:1 for about 20 years.  I ran and pushed the saw way harder than it should have been run.  The piston still looks shiny and new.  A few years ago I switched to Stihl XP silver bottle.  I ran 50:1 and 40:1.  The XP seems to run a little cleaner and is biodegradable.   Less oily smell in clothes.  In fact I ran same mix in all my OPE and never had an engine failure.
Now, since I have been here and over at the other joint, you guys got me runnin raggid trying out all these exotic oils, costing me money.  Lol