I have one 2-cycle engine, a Stihl MS-261 chainsaw, the smallest saw in Stihl's professional grade offering.
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I have been running amsoil full synthetic mix 80:1 for years no problem less smoke. They Claim you can run 100:1 amsoil. My manuals called for 89 octane. Full synthetic oils in most applications are worth it to me. I worked in GM's materials lab testing oils in the early 2000's we saw many benefits. Especially in crankcase oil. Obviously we did not test 2 stroke oils
There's at least one smaller pro saw dont see them often.
MS 241 C-M | Compact & Lightweight Professional Chainsaw | STIHL USA Mobile
The 201cm has $700 list price
Making it more expensive than the ms261 cm @ $559
and nearly expensive as the ms362
MS 21 C-EM Farm & Ranch Saws - Milford, MI | STIHL Dealer
Not sure why stihl list the 201 in the farm and ranch grade