No thats incorrect, its in the manuals, some say saws over 70cc 592 manual says saws over 75cc and professional saws(not that it makes any differences as all saws run flat stick) run 32:1 personally i dislike the husky oil, and stihl that matter even more, one reason being, here at dealership and Husky AU, they will not tell me who makes the oil and what its specs are, or is it an actual air-cooled oil?? Red flags for me. I use dedicated Air-Cooled two stroke oil. Oils are a big argument fact but i can only go on my years of never damaging an engine, prior i used Pennzoil A-C 2stroke can’t get here anymore. And the last dealer as said, whom i don’t live there, couldn’t believe how good the cylinder was, asked what petrol octane i run, i said 98, and if i have to it will be 95 at minimum. As for all my saws that are not autotune they run 25:1 and not one has had a piston replacement or failed in over thirty years, my brother in-laws on the other hand have two pallets of stihls that were all run at 50:1. Thing is no matter who is the manufacturer if an engine fails they won’t cover a cylinder.. Your word against theres. But it’s up to you. Two big husky dealers here that don’t even know each other and over 1200km apart run old saws 25:1 new saws 32:1 none at 50:1… it’s all for emissions not longevity.

stay sharp