@Mr.Metsä I started that thread referred to in the post just after your OP. Here's what I gather - more experienced hands will hopefully chime in.
Use the manufacturer's instructions if you're not doing anything crazy. If you are, then you should be running 33:1 or 40:1 especially if you're doing anything heavy duty. There are better and worse 2-stroke oils on the market. Amsoil Saber, VP, and Red Armor are good, and there are other good options too. Stihl oil, especially Ultra, is not as good as one might be led to believe. I believe the best thing to do is monitor your temps using an IR thermometer (cylinder should be between 220 and 320 F) and make sure to tune your carb appropriately. The Husky manuals say to use 33:1 for heavy duty applications but they don't say this in the US manuals. Why knows why? Extra oil will lube your bits, and the extra fuel (due to rich carb settings) will keep your chainsaw (no idea about other equipment) cooler. Hope this helps!