Originally Posted by GearNut
Either ratio should work well. The ultimate decision breaker is the ratio that your particular oil is designed to run at. Research it if the bottle does not give this information. If researching it comes up with nothing, better to err on the safe side and go with 32:1.
I use the same oil for my string trimmer (40:1) and chainsaw (50:1).
The bottle has fill lines for both ratios. I currently have gas for my trimmer handy, should I throw some of that in it to see how it runs?
I know some dirtbikes run 40:1 and those engines make more power and produce more heat than our HT engines, so that's why I was wondering.