Ok... My sympathies George, its no fun buying a chainsaw only to have it die an early death. I'd be very cross.
Your experience is a good illustration of when knowledge is unevenly distributed. And perhaps also an illustration of why buying small engines from specialists is the wiser choice.
I grew up learning that two stroke mix was 25:1. And that is a good rule of thumb when you are uncertain.
When I bought my first Stihl 18 years ago, the Stihl guys explained 50:1 for the synthetic oil which surprised me but it works. I've used Stihl oil ever since and share four Stihl saws in my family. They are priced slightly above Husqvarana and maybe not much different but my experience is Stihl every time.
Outboard motor two stroke oil is not the same - it has a different ash content and outboards rely on water for cooling. Don't use it in a chainsaw.
The synthetic oil for saws looks expensive but it goes a long way. Bought 4 litres four years ago and it isn't empty yet.
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