Dang! I hate to hear this after using TCW oil for the last 30+ years in my Stihls and Lawnboys and weedeaters.
Never have had an engine failure, always mixed 40:1.
I wonder what the current specs on toilet paper are? Maybe I ought to ditch the old Charmin for some other newer brand..I"ll have to read what the makers say never can tell, might keep me from blowing a seal in my rearend.......hehe!